diff --git a/src/delta-apply.c b/src/delta-apply.c
index 16f26be44..5bcdc2003 100644
--- a/src/delta-apply.c
+++ b/src/delta-apply.c
@@ -52,7 +52,7 @@ int git__delta_apply(
 		return GIT_ERROR;
 
 	if ((res_dp = git__malloc(res_sz + 1)) == NULL)
-		return GIT_ERROR;
+		return GIT_ENOMEM;
 	res_dp[res_sz] = '\0';
 	out->data = res_dp;
 	out->len = res_sz;