Index: clang-tools-extra/clang-tidy/google/ExplicitConstructorCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/google/ExplicitConstructorCheck.cpp
+++ clang-tools-extra/clang-tidy/google/ExplicitConstructorCheck.cpp
@@ -97,8 +97,7 @@
   }
 
   const auto *Ctor = Result.Nodes.getNodeAs<CXXConstructorDecl>("ctor");
-  if (Ctor->isOutOfLine() || Ctor->getNumParams() == 0 ||
-      Ctor->getMinRequiredArguments() > 1)
+  if (Ctor->isOutOfLine() || Ctor->isConvertingConstructor(true))
     return;
 
   bool TakesInitializerList = isStdInitializerList(