1 files changed, 2 insertions, 1 deletions
diff --git a/ext/dbm/dbm.c b/ext/dbm/dbm.c
index 7a78f8dad0..84d331ae53 100644
--- a/ext/dbm/dbm.c
+++ b/ext/dbm/dbm.c
@@ -91,7 +91,8 @@ fdbm_alloc(VALUE klass)
 static VALUE
 fdbm_initialize(int argc, VALUE *argv, VALUE obj)
 {
-    VALUE file, vmode, vflags;
+    volatile VALUE file;
+    VALUE vmode, vflags;
     DBM *dbm;
     struct dbmdata *dbmp;
     int mode, flags = 0;