diff --git a/jccolor.c b/jccolor.c
index 57a76c3..6a8b48f 100644
--- a/jccolor.c
+++ b/jccolor.c
@@ -302,7 +302,7 @@
 
 #ifdef ENABLE_ANDROID_NULL_CONVERT
 
-typedef unsigned long UINT32;
+typedef unsigned int UINT32;
 
 #define B0(n)   ((n) & 0xFF)
 #define B1(n)   (((n) >> 8) & 0xFF)