1 files changed, 1 insertions, 0 deletions
diff --git a/toolkit/components/glean/bindings/private/Timespan.cpp b/toolkit/components/glean/bindings/private/Timespan.cpp
index 13e57317fa..2ab1f0dbba 100644
--- a/toolkit/components/glean/bindings/private/Timespan.cpp
+++ b/toolkit/components/glean/bindings/private/Timespan.cpp
@@ -36,6 +36,7 @@ class ScalarIDHashKey : public PLDHashEntryHdr {
     return static_cast<std::underlying_type<ScalarID>::type>(*aKey);
   }
   enum { ALLOW_MEMMOVE = true };
+  static_assert(std::is_trivially_copyable_v<ScalarID>);
 
  private:
   const ScalarID mValue;