diff --git a/OpenCL/inc_common.cl b/OpenCL/inc_common.cl
index 4da2331f5..09946e52f 100644
--- a/OpenCL/inc_common.cl
+++ b/OpenCL/inc_common.cl
@@ -1425,7 +1425,7 @@ DECLSPEC float hc_get_entropy (const u32 *buf, const int elems)
 {
   const int length = elems * 4;
 
-  float entropy = 0.0;
+  float entropy = 0.0f;
 
   #ifdef _unroll
   #pragma unroll