diff --git a/winpr/libwinpr/utils/cmdline.c b/winpr/libwinpr/utils/cmdline.c
index 3b1907dea..a2f55435b 100644
--- a/winpr/libwinpr/utils/cmdline.c
+++ b/winpr/libwinpr/utils/cmdline.c
@@ -57,7 +57,7 @@ int CommandLineParseArgumentsA(int argc, LPSTR* argv, COMMAND_LINE_ARGUMENT_A* o
 	const char* sigil;
 	size_t sigil_length;
 	char* keyword;
-	SSIZE_T keyword_length;
+	size_t keyword_length;
 	SSIZE_T keyword_index;
 	char* separator;
 	char* value;