diff --git a/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c b/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c
index 4c59b83243..7b16d9816c 100644
--- a/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c
+++ b/IntelFrameworkModulePkg/Library/GenericBdsLib/BdsMisc.c
@@ -795,7 +795,7 @@ BdsLibOutputStrings (
     // If String is NULL, then it's the end of the list
     //
     String = VA_ARG (Args, CHAR16 *);
-    if (String != NULL) {
+    if (String == NULL) {
       break;
     }