diff --git a/src/btop_tools.cpp b/src/btop_tools.cpp
index ba82ab42..58c319b1 100644
--- a/src/btop_tools.cpp
+++ b/src/btop_tools.cpp
@@ -171,7 +171,7 @@ namespace Tools {
 	size_t wide_ulen(const string& str) {
 		unsigned int chars = 0;
 		std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
-		auto w_str = conv.from_bytes(str.c_str());
+		auto w_str = conv.from_bytes((str.size() > 10000 ? str.substr(0, 10000).c_str() : str.c_str()));
 
 		for (auto c : w_str) {
 			chars += utf8::wcwidth(c);
@@ -194,7 +194,7 @@ namespace Tools {
 		if (len < 1 or str.empty()) return "";
 		if (wide) {
 			std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
-			auto w_str = conv.from_bytes(str.c_str());
+			auto w_str = conv.from_bytes((str.size() > 10000 ? str.substr(0, 10000).c_str() : str.c_str()));
 			while (wide_ulen(w_str) > len)
 				w_str.pop_back();
   			str = conv.to_bytes(w_str);
diff --git a/src/linux/btop_collect.cpp b/src/linux/btop_collect.cpp
index 62ae505d..3e165a86 100644
--- a/src/linux/btop_collect.cpp
+++ b/src/linux/btop_collect.cpp
@@ -1493,7 +1493,13 @@ namespace Proc {
 					pread.open(d.path() / "cmdline");
 					if (not pread.good()) continue;
 					long_string.clear();
-					while(getline(pread, long_string, '\0')) new_proc.cmd += long_string + ' ';
+					while(getline(pread, long_string, '\0')) {
+						new_proc.cmd += long_string + ' '; 
+						if (new_proc.cmd.size() > 1000) {
+							new_proc.cmd.resize(1000);
+							break;
+						}
+					}
 					pread.close();
 					if (not new_proc.cmd.empty()) new_proc.cmd.pop_back();