diff --git a/src/libCom/flex/misc.c b/src/libCom/flex/misc.c
index b8a7a0399..b41668f3a 100644
--- a/src/libCom/flex/misc.c
+++ b/src/libCom/flex/misc.c
@@ -438,7 +438,7 @@ int htoi(unsigned char *str)
 {
     int result;
 
-    (void) sscanf( (char *) str, "%x", &result );
+    (void) sscanf( (char *) str, "%x", (unsigned *) &result );
 
     return ( result );
     }
@@ -653,7 +653,7 @@ int otoi(Char *str)
 {
     int result;
 
-    (void) sscanf( (char *) str, "%o", &result );
+    (void) sscanf( (char *) str, "%o", (unsigned *) &result );
 
     return ( result );
     }