diff --git a/Doorstop/Proxy/assert_util.h b/Doorstop/Proxy/assert_util.h
index ec026404..d2d31b46 100644
--- a/Doorstop/Proxy/assert_util.h
+++ b/Doorstop/Proxy/assert_util.h
@@ -9,8 +9,8 @@
 #include <stdio.h>
 
 static HANDLE log_handle;
-char buffer[8192];
-wchar_t bufferW[8192];
+static char buffer[8192];
+static wchar_t bufferW[8192];
 
 inline void init_logger()
 {