diff --git a/libclamav/lzma_iface.c b/libclamav/lzma_iface.c
index e96d8c2ff..4706653f2 100644
--- a/libclamav/lzma_iface.c
+++ b/libclamav/lzma_iface.c
@@ -37,7 +37,7 @@ void *__lzma_wrap_alloc(void *unused, size_t size) {
 	return NULL;
     }
 
-    return cli_malloc(size);
+    return cli_calloc(1, size);
 }
 void __lzma_wrap_free(void *unused, void *freeme) {
     UNUSEDPARAM(unused);