diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index f3e7dd18745..7ad6812a894 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -972,8 +972,8 @@ Pod::Spec.new do |s|
     ss.dependency "#{s.name}/Implementation", version
     ss.dependency "#{s.name}/Cronet-Interface", version
 
-    ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-                      'src/core/ext/transport/cronet/transport/cronet_transport.{c,h}',
+    ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.cc',
+                      'src/core/ext/transport/cronet/transport/cronet_transport.{cc,h}',
                       'third_party/objective_c/Cronet/bidirectional_stream_c.h'
   end
 
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index 22814849172..77191aa6d04 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -164,8 +164,8 @@
       ss.dependency "#{s.name}/Implementation", version
       ss.dependency "#{s.name}/Cronet-Interface", version
 
-      ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-                        'src/core/ext/transport/cronet/transport/cronet_transport.{c,h}',
+      ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.cc',
+                        'src/core/ext/transport/cronet/transport/cronet_transport.{cc,h}',
                         'third_party/objective_c/Cronet/bidirectional_stream_c.h'
     end