diff --git a/tools/mkdeps.c b/tools/mkdeps.c
index 54b8850016..b3394cef03 100644
--- a/tools/mkdeps.c
+++ b/tools/mkdeps.c
@@ -46,7 +46,7 @@
 
 #define MAX_BUFFER  (8192)
 #define MAX_EXPAND  (2048)
-#define MAX_SHQUOTE (3072)
+#define MAX_SHQUOTE (4096)
 
 /* MAX_PATH might be defined in stdlib.h */