diff --git a/crypto/dso/dso_win32.c b/crypto/dso/dso_win32.c
index cc602c7cb6949191e2215d01d8c7fb2a6c6f7819..212a255b4b387a75a1afdbf05c4fad1985713290 100644
--- a/crypto/dso/dso_win32.c
+++ b/crypto/dso/dso_win32.c
@@ -211,7 +211,7 @@ static int win32_bind(DSO *dso, const char *symname, void **symptr)
 	return(1);
 	}
 
-static int win32_ctrl(DSO *dso, int cmd, long larg, void *parg)
+static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg)
         {
         if(dso == NULL)
                 {