diff --git a/base/HidlSupport.cpp b/base/HidlSupport.cpp
index ec5b18f..6f04838 100644
--- a/base/HidlSupport.cpp
+++ b/base/HidlSupport.cpp
@@ -239,6 +239,11 @@
 
 hidl_string &hidl_string::operator=(const char *s) {
     clear();
+
+    if (s == nullptr) {
+        return *this;
+    }
+
     copyFrom(s, strlen(s));
     return *this;
 }