diff --git a/winpr/include/winpr/nt.h b/winpr/include/winpr/nt.h
index 5224e1d42..544993436 100644
--- a/winpr/include/winpr/nt.h
+++ b/winpr/include/winpr/nt.h
@@ -1272,7 +1272,7 @@
 
 /* defined in ntstatus.h */
 #if !defined(NTSTATUS_FROM_WIN32) && !defined(INLINE_NTSTATUS_FROM_WIN32)
-INLINE NTSTATUS NTSTATUS_FROM_WIN32(long x)
+static INLINE NTSTATUS NTSTATUS_FROM_WIN32(long x)
 {
 	return x <= 0 ? (NTSTATUS)x : (NTSTATUS) (((x) & 0x0000FFFF) | (0x7 << 16) | 0xC0000000);
 }