diff --git a/library/src/androidTest/java/com/bumptech/glide/GenericRequestBuilderTest.java b/library/src/androidTest/java/com/bumptech/glide/GenericRequestBuilderTest.java
index 5de866ddf3..15b91130ee 100644
--- a/library/src/androidTest/java/com/bumptech/glide/GenericRequestBuilderTest.java
+++ b/library/src/androidTest/java/com/bumptech/glide/GenericRequestBuilderTest.java
@@ -75,6 +75,16 @@ public void testThrowsWhenOverrideHeightEqualToZero() {
         getNullModelRequest().override(100, 0);
     }
 
+    @Test
+    public void testDoesNotThrowWhenWidthIsSizeOriginal() {
+        getNullModelRequest().override(Target.SIZE_ORIGINAL, 100);
+    }
+
+    @Test
+    public void testDoesNotThrowWhenHeightIsSizeOriginal() {
+        getNullModelRequest().override(100, Target.SIZE_ORIGINAL);
+    }
+
     @Test
     public void testDoesNotThrowWhenModelAndLoaderNull() {
         new GenericRequestBuilder(Robolectric.application, null, null, Object.class, mock(Glide.class), requestTracker,
diff --git a/library/src/androidTest/java/com/bumptech/glide/request/target/SimpleTargetTest.java b/library/src/androidTest/java/com/bumptech/glide/request/target/SimpleTargetTest.java
index 7575ea8d4e..509c1d8053 100644
--- a/library/src/androidTest/java/com/bumptech/glide/request/target/SimpleTargetTest.java
+++ b/library/src/androidTest/java/com/bumptech/glide/request/target/SimpleTargetTest.java
@@ -36,9 +36,14 @@ public void testCanBeConstructedWithoutDimensions() {
         getTarget();
     }
 
-    @Test(expected = IllegalArgumentException.class)
-    public void testThrowsOnGetSizeIfConstructedWithoutDimensions() {
-        getTarget().getSize(mock(SizeReadyCallback.class));
+    @Test
+    public void testConstructorDoesNotThrowWithSizeOriginal() {
+        getTarget(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL);
+    }
+
+    @Test
+    public void testGetSizeDoesNotThrowWithSizeOriginal() {
+        getTarget(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL).getSize(mock(SizeReadyCallback.class));
     }
 
     private SimpleTarget<Object> getTarget() {
diff --git a/library/src/main/java/com/bumptech/glide/GenericRequestBuilder.java b/library/src/main/java/com/bumptech/glide/GenericRequestBuilder.java
index b8eb0fc686..ef49da3c25 100644
--- a/library/src/main/java/com/bumptech/glide/GenericRequestBuilder.java
+++ b/library/src/main/java/com/bumptech/glide/GenericRequestBuilder.java
@@ -510,11 +510,8 @@ public GenericRequestBuilder<ModelType, DataType, ResourceType, TranscodeType> s
      * @return This request builder.
      */
     public GenericRequestBuilder<ModelType, DataType, ResourceType, TranscodeType> override(int width, int height) {
-        if (width <= 0) {
-            throw new IllegalArgumentException("Width must be > 0");
-        }
-        if (height <= 0) {
-            throw new IllegalArgumentException("Height must be > 0");
+        if (!Util.isValidDimensions(width, height)) {
+            throw new IllegalArgumentException("Width and height must be Target#SIZE_ORIGINAL or > 0");
         }
         this.overrideWidth = width;
         this.overrideHeight = height;
@@ -754,9 +751,9 @@ private Request buildRequestRecursive(Target<TranscodeType> target, ThumbnailReq
                 thumbnailRequestBuilder.priority = getThumbnailPriority();
             }
 
-            if (overrideWidth > 0 && overrideHeight > 0
-                && thumbnailRequestBuilder.overrideWidth < 0
-                && thumbnailRequestBuilder.overrideHeight < 0) {
+            if (Util.isValidDimensions(overrideWidth, overrideHeight)
+                    && !Util.isValidDimensions(thumbnailRequestBuilder.overrideWidth,
+                            thumbnailRequestBuilder.overrideHeight)) {
               thumbnailRequestBuilder.override(overrideWidth, overrideHeight);
             }
 
diff --git a/library/src/main/java/com/bumptech/glide/load/resource/bitmap/BitmapTransformation.java b/library/src/main/java/com/bumptech/glide/load/resource/bitmap/BitmapTransformation.java
index d119964fb6..326a50e864 100644
--- a/library/src/main/java/com/bumptech/glide/load/resource/bitmap/BitmapTransformation.java
+++ b/library/src/main/java/com/bumptech/glide/load/resource/bitmap/BitmapTransformation.java
@@ -8,6 +8,7 @@
 import com.bumptech.glide.load.engine.Resource;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 import com.bumptech.glide.request.target.Target;
+import com.bumptech.glide.util.Util;
 
 /**
  * A simple {@link com.bumptech.glide.load.Transformation} for transforming {@link android.graphics.Bitmap}s that
@@ -43,8 +44,7 @@ public BitmapTransformation(BitmapPool bitmapPool) {
 
     @Override
     public final Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-        if ((outWidth <= 0 && outWidth != Target.SIZE_ORIGINAL)
-                || (outHeight <= 0 && outHeight != Target.SIZE_ORIGINAL)) {
+        if (!Util.isValidDimensions(outWidth, outHeight)) {
             throw new IllegalArgumentException("Cannot apply transformation on width: " + outWidth + " or height: "
                     + outHeight + " less than or equal to zero and not Target.SIZE_ORIGINAL");
         }
diff --git a/library/src/main/java/com/bumptech/glide/request/target/SimpleTarget.java b/library/src/main/java/com/bumptech/glide/request/target/SimpleTarget.java
index c55e29ab86..b3262c03d4 100644
--- a/library/src/main/java/com/bumptech/glide/request/target/SimpleTarget.java
+++ b/library/src/main/java/com/bumptech/glide/request/target/SimpleTarget.java
@@ -1,5 +1,7 @@
 package com.bumptech.glide.request.target;
 
+import com.bumptech.glide.util.Util;
+
 /**
  * A simple {@link com.bumptech.glide.request.target.Target} base class with default (usually noop) implementations
  * of non essential methods that allows the caller to specify an exact width/height. Typicaly use cases look something
@@ -52,9 +54,10 @@ public SimpleTarget(int width, int height) {
      */
     @Override
     public final void getSize(SizeReadyCallback cb) {
-        if (width <= 0 || height <= 0) {
-            throw new IllegalArgumentException("Width and height must both be > 0, but given width: " + width + " and"
-                    + " height: " + height + ", either provide dimensions in the constructor or call override()");
+        if (!Util.isValidDimensions(width, height)) {
+            throw new IllegalArgumentException("Width and height must both be > 0 or Target#SIZE_ORIGINAL, but given"
+                    + " width: " + width + " and height: " + height + ", either provide dimensions in the constructor"
+                    + " or call override()");
         }
         cb.onSizeReady(width, height);
     }
diff --git a/library/src/main/java/com/bumptech/glide/util/Util.java b/library/src/main/java/com/bumptech/glide/util/Util.java
index cc0743fe70..7ba905dd31 100644
--- a/library/src/main/java/com/bumptech/glide/util/Util.java
+++ b/library/src/main/java/com/bumptech/glide/util/Util.java
@@ -5,6 +5,8 @@
 import android.os.Build;
 import android.os.Looper;
 
+import com.bumptech.glide.request.target.Target;
+
 import java.util.ArrayDeque;
 import java.util.Queue;
 
@@ -107,6 +109,17 @@ private static int getBytesPerPixel(Bitmap.Config config) {
         return bytesPerPixel;
     }
 
+    /**
+     * Returns true if width and height are both > 0 and/or equal to {@link Target#SIZE_ORIGINAL}.
+     */
+    public static boolean isValidDimensions(int width, int height) {
+        return isValidDimension(width) && isValidDimension(height);
+    }
+
+    private static boolean isValidDimension(int dimen) {
+        return dimen > 0 || dimen == Target.SIZE_ORIGINAL;
+    }
+
     /**
      * Throws an {@link java.lang.IllegalArgumentException} if called on a thread other than the main thread.
      */