diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
index b3a59a6c131d..ffd3b1ce49f1 100644
--- a/Source/JavaScriptCore/ChangeLog
+++ b/Source/JavaScriptCore/ChangeLog
@@ -1,3 +1,19 @@
+2015-05-15  Benjamin Poulain  <bpoulain@apple.com>
+
+        [ARM64] Do not fail branchConvertDoubleToInt32 when the result is zero and not negative zero
+        https://bugs.webkit.org/show_bug.cgi?id=144976
+
+        Reviewed by Michael Saboff.
+
+        Failing the conversion on zero is pretty dangerous as we discovered on x86.
+
+        This patch does not really impact performance significantly because
+        r184220 removed the zero checks from Kraken. This patch is just to be
+        on the safe side for cases not covered by existing benchmarks.
+
+        * assembler/MacroAssemblerARM64.h:
+        (JSC::MacroAssemblerARM64::branchConvertDoubleToInt32):
+
 2015-05-14  Andreas Kling  <akling@apple.com>
 
         String.prototype.split() should create efficient substrings.
diff --git a/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h b/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
index 63c1c659a293..9c92bc99909f 100644
--- a/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
+++ b/Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
@@ -1193,9 +1193,14 @@ class MacroAssemblerARM64 : public AbstractMacroAssembler<ARM64Assembler, MacroA
         m_assembler.scvtf<64, 32>(fpTempRegister, dest);
         failureCases.append(branchDouble(DoubleNotEqualOrUnordered, src, fpTempRegister));
 
-        // If the result is zero, it might have been -0.0, and the double comparison won't catch this!
-        if (negZeroCheck)
-            failureCases.append(branchTest32(Zero, dest));
+        // Test for negative zero.
+        if (negZeroCheck) {
+            Jump valueIsNonZero = branchTest32(NonZero, dest);
+            RegisterID scratch = getCachedMemoryTempRegisterIDAndInvalidate();
+            m_assembler.fmov<64>(scratch, src);
+            failureCases.append(makeTestBitAndBranch(scratch, 63, IsNonZero));
+            valueIsNonZero.link(this);
+        }
     }
 
     Jump branchDouble(DoubleCondition cond, FPRegisterID left, FPRegisterID right)