--- a/dom/media/webrtc/MediaEngineRemoteVideoSource.cpp
+++ b/dom/media/webrtc/MediaEngineRemoteVideoSource.cpp
@@ -597,17 +597,17 @@ MediaEngineRemoteVideoSource::GetFitness
   // Treat width|height|frameRate == 0 on capability as "can do any".
   // This allows for orthogonal capabilities that are not in discrete steps.
 
   typedef MediaConstraintsHelper H;
   uint64_t distance =
     uint64_t(H::FitnessDistance(aDeviceId, aConstraints.mDeviceId)) +
     uint64_t(H::FitnessDistance(mFacingMode, aConstraints.mFacingMode)) +
     uint64_t(aCandidate.width ? H::FitnessDistance(int32_t(aCandidate.width),
-                                                  aConstraints.mWidth) : 0) +
+                                                   aConstraints.mWidth) : 0) +
     uint64_t(aCandidate.height ? H::FitnessDistance(int32_t(aCandidate.height),
                                                     aConstraints.mHeight) : 0) +
     uint64_t(aCandidate.maxFPS ? H::FitnessDistance(double(aCandidate.maxFPS),
                                                     aConstraints.mFrameRate) : 0);
   return uint32_t(std::min(distance, uint64_t(UINT32_MAX)));
 }
 
 uint32_t