diff --git a/src/indexer.c b/src/indexer.c
index 91b7ba5d9..1b5339f23 100644
--- a/src/indexer.c
+++ b/src/indexer.c
@@ -259,7 +259,7 @@ static int store_object(git_indexer_stream *idx)
 	entry = git__calloc(1, sizeof(*entry));
 	GITERR_CHECK_ALLOC(entry);
 
-	pentry = git__malloc(sizeof(struct git_pack_entry));
+	pentry = git__calloc(1, sizeof(struct git_pack_entry));
 	GITERR_CHECK_ALLOC(pentry);
 
 	git_hash_final(&oid, ctx);
@@ -328,7 +328,7 @@ static int hash_and_save(git_indexer_stream *idx, git_rawobj *obj, git_off_t ent
 		return -1;
 	}
 
-	pentry = git__malloc(sizeof(struct git_pack_entry));
+	pentry = git__calloc(1, sizeof(struct git_pack_entry));
 	GITERR_CHECK_ALLOC(pentry);
 
 	git_oid_cpy(&pentry->sha1, &oid);
diff --git a/src/transports/smart_protocol.c b/src/transports/smart_protocol.c
index 67d309523..636616717 100644
--- a/src/transports/smart_protocol.c
+++ b/src/transports/smart_protocol.c
@@ -576,7 +576,7 @@ static int add_push_report_pkt(git_push *push, git_pkt *pkt)
 
 	switch (pkt->type) {
 		case GIT_PKT_OK:
-			status = git__malloc(sizeof(push_status));
+			status = git__calloc(1, sizeof(push_status));
 			GITERR_CHECK_ALLOC(status);
 			status->msg = NULL;
 			status->ref = git__strdup(((git_pkt_ok *)pkt)->ref);
diff --git a/src/win32/dir.c b/src/win32/dir.c
index 95ae5060e..8c51d8378 100644
--- a/src/win32/dir.c
+++ b/src/win32/dir.c
@@ -32,7 +32,7 @@ git__DIR *git__opendir(const char *dir)
 	if (!dir || !init_filter(filter, sizeof(filter), dir))
 		return NULL;
 
-	new = git__malloc(sizeof(*new));
+	new = git__calloc(1, sizeof(*new));
 	if (!new)
 		return NULL;