diff --git a/servers/slapd/oidm.c b/servers/slapd/oidm.c
index 32b4a47e74..3c93c3ef41 100644
--- a/servers/slapd/oidm.c
+++ b/servers/slapd/oidm.c
@@ -119,9 +119,9 @@ usage:	fprintf( stderr, "\tObjectIdentifier <name> <oid>\n");
 		return 1;
 	}
 
-	om = (OidMacro *) SLAP_MALLOC( sizeof(OidMacro) );
+	om = (OidMacro *) SLAP_CALLOC( sizeof(OidMacro), 1 );
 	if( om == NULL ) {
-		Debug( LDAP_DEBUG_ANY, "parse_oidm: SLAP_MALLOC failed", 0, 0, 0 );
+		Debug( LDAP_DEBUG_ANY, "parse_oidm: SLAP_CALLOC failed", 0, 0, 0 );
 		return 1;
 	}