diff --git a/src/opencl.c b/src/opencl.c
index e56feec44..9166e055b 100644
--- a/src/opencl.c
+++ b/src/opencl.c
@@ -274,6 +274,8 @@ static int setup_device_types_filter (hashcat_ctx_t *hashcat_ctx, const char *op
       {
         event_log_error (hashcat_ctx, "Invalid device_type %d specified", device_type);
 
+        hcfree (device_types);
+
         return -1;
       }