diff --git a/pixel.cpp b/pixel.cpp
index 2703e9e67b20087ffd33bfe2285de0323cd79e8c..ade26af837867ac4b05aae285633eaa31972fc37 100644
--- a/pixel.cpp
+++ b/pixel.cpp
@@ -17,7 +17,7 @@ int convertBinInt(long long n);
 void decrypt(int data);
 
 
-void pixel(char* key;
+void pixel(char *key;
         ap_int<32> selector,
 		ap_int<32> position1,
 		ap_int<32> position2,