1 files changed, 4 insertions, 1 deletions
diff --git a/cache.h b/cache.h
index 6761554e6c..9700ca5018 100644
--- a/cache.h
+++ b/cache.h
@@ -235,7 +235,10 @@ extern void verify_non_filename(const char *prefix, const char *name);
 #define ALLOC_GROW(x, nr, alloc) \
 	do { \
 		if ((nr) >= alloc) { \
-			alloc = alloc_nr(alloc); \
+			if (alloc_nr(alloc) < (nr)) \
+				alloc = (nr); \
+			else \
+				alloc = alloc_nr(alloc); \
 			x = xrealloc((x), alloc * sizeof(*(x))); \
 		} \
 	} while(0)