diff --git a/contrib/tools/checksum-icc.c b/contrib/tools/checksum-icc.c
index 83e1f9a430..a4571740d3 100644
--- a/contrib/tools/checksum-icc.c
+++ b/contrib/tools/checksum-icc.c
@@ -81,7 +81,8 @@ int main(int argc, char **argv)
             printf("/* ERROR: %s */\n", argv[i]);
          }
 
-         (void)fclose(ip);
+         if (ip != NULL)
+            (void)fclose(ip);
       }
    }