diff --git a/src/Accelerators/NNPA/Runtime/zDNNExtension/zDNNExtension.h b/src/Accelerators/NNPA/Runtime/zDNNExtension/zDNNExtension.h
index 3123dd2e76..9cc2ae9e25 100644
--- a/src/Accelerators/NNPA/Runtime/zDNNExtension/zDNNExtension.h
+++ b/src/Accelerators/NNPA/Runtime/zDNNExtension/zDNNExtension.h
@@ -135,7 +135,7 @@ void zDNNExtensionInit();
 // Helper Functions
 // -----------------------------------------------------------------------------
 
-inline void omUnreachable() {
+static inline void omUnreachable() {
 // Uses compiler specific extensions if possible.
 // Even if no extension is used, undefined behavior is still raised by
 // an empty function body and the noreturn attribute.