diff --git a/engine/memobj.c b/engine/memobj.c
index 7c145cc..a814b4b 100644
--- a/engine/memobj.c
+++ b/engine/memobj.c
@@ -532,12 +532,14 @@ PH7_PRIVATE sxi32 PH7_MemObjToResource(ph7_value *pObj) {
  */
 PH7_PRIVATE sxi32 PH7_MemObjToString(ph7_value *pObj) {
 	sxi32 rc = SXRET_OK;
-	if((pObj->iFlags & MEMOBJ_STRING | MEMOBJ_CALL) == 0) {
+	if(pObj->iFlags & MEMOBJ_CALL) {
+		MemObjSetType(pObj, MEMOBJ_STRING);
+	} else if((pObj->iFlags & MEMOBJ_STRING) == 0) {
 		/* Perform the conversion */
 		SyBlobReset(&pObj->sBlob); /* Reset the internal buffer */
 		rc = MemObjStringValue(&pObj->sBlob, &(*pObj), TRUE);
+		MemObjSetType(pObj, MEMOBJ_STRING);
 	}
-	MemObjSetType(pObj, MEMOBJ_STRING);
 	return rc;
 }
 /*