diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index b50c3c6..bfee6e9 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -837,7 +837,8 @@
 	int ret;
 
 	for (i = 0; i < ctcount; i++) {
-		int ilen, dlen = COMP_BUF_SIZE;
+		int ilen;
+		unsigned int dlen = COMP_BUF_SIZE;
 
 		memset(result, 0, sizeof (result));
 
@@ -869,7 +870,8 @@
 	}
 
 	for (i = 0; i < dtcount; i++) {
-		int ilen, dlen = COMP_BUF_SIZE;
+		int ilen;
+		unsigned int dlen = COMP_BUF_SIZE;
 
 		memset(result, 0, sizeof (result));