diff --git a/cint/cint/src/opr.cxx b/cint/cint/src/opr.cxx
index c97e754fa1150543d7dc5390eada2da974ec2509..c53f2387e8c7a8f754bec1b23bae12daaf1e42cb 100644
--- a/cint/cint/src/opr.cxx
+++ b/cint/cint/src/opr.cxx
@@ -2696,7 +2696,7 @@ int G__parenthesisovldobj(G__value* result3, G__value* result, const char* realn
 #endif
 )
 {
-   int known;
+   int known = 0;
    long store_struct_offset;
    int store_tagnum;
    int funcmatch;