diff --git a/src/libGLESv2/Program.cpp b/src/libGLESv2/Program.cpp
index bcab6f7..561852e 100644
--- a/src/libGLESv2/Program.cpp
+++ b/src/libGLESv2/Program.cpp
@@ -270,7 +270,7 @@
 
 GLint Program::getUniformLocation(std::string name)
 {
-    int subscript = 0;
+    unsigned int subscript = 0;
 
     // Strip any trailing array operator and retrieve the subscript
     size_t open = name.find_last_of('[');