diff --git a/visualizer/offload_visualizer.c b/visualizer/offload_visualizer.c
index 8b1c469..4d1373f 100644
--- a/visualizer/offload_visualizer.c
+++ b/visualizer/offload_visualizer.c
@@ -869,9 +869,13 @@
     case VISUALIZER_CMD_MEASURE: {
         if (pReplyData == NULL || replySize == NULL ||
                 *replySize < (sizeof(int32_t) * MEASUREMENT_COUNT)) {
-            ALOGV("%s VISUALIZER_CMD_MEASURE error *replySize %u <"
-                    "(sizeof(int32_t) * MEASUREMENT_COUNT) %zu",
-                    __func__, *replySize, sizeof(int32_t) * MEASUREMENT_COUNT);
+            if (replySize == NULL) {
+                ALOGV("%s VISUALIZER_CMD_MEASURE error replySize NULL", __func__);
+            } else {
+                ALOGV("%s VISUALIZER_CMD_MEASURE error *replySize %u <"
+                        "(sizeof(int32_t) * MEASUREMENT_COUNT) %zu",
+                        __func__, *replySize, sizeof(int32_t) * MEASUREMENT_COUNT);
+            }
             android_errorWriteLog(0x534e4554, "30229821");
             return -EINVAL;
         }