--- a/media/libstagefright/binding/H264.cpp
+++ b/media/libstagefright/binding/H264.cpp
@@ -4,17 +4,16 @@
 
 #include "mozilla/ArrayUtils.h"
 #include "mozilla/PodOperations.h"
 #include "mp4_demuxer/AnnexB.h"
 #include "mp4_demuxer/ByteReader.h"
 #include "mp4_demuxer/ByteWriter.h"
 #include "mp4_demuxer/H264.h"
 #include <media/stagefright/foundation/ABitReader.h>
-#include <cmath>
 
 using namespace mozilla;
 
 namespace mp4_demuxer
 {
 
 class BitReader
 {
@@ -127,17 +126,17 @@ H264::DecodeNALUnit(const ByteBuffer* aN
   return rbsp.forget();
 }
 
 static int32_t
 ConditionDimension(float aValue)
 {
   // This will exclude NaNs and too-big values.
   if (aValue > 1.0 && aValue <= INT32_MAX)
-    return int32_t(round(aValue));
+    return int32_t(aValue);
   return 0;
 }
 
 /* static */ bool
 H264::DecodeSPS(const ByteBuffer* aSPS, SPSData& aDest)
 {
   MOZ_ASSERT(aSPS);
   BitReader br(*aSPS);