diff --git a/lib/Target/Mips/MipsInstrFPU.td b/lib/Target/Mips/MipsInstrFPU.td
index bd61738ecff..8fa1c657098 100644
--- a/lib/Target/Mips/MipsInstrFPU.td
+++ b/lib/Target/Mips/MipsInstrFPU.td
@@ -281,7 +281,7 @@ def MOVCCRToCCR : MipsPseudo<(outs CCR:$dst), (ins CCR:$src),
 // Floating Point Patterns
 //===----------------------------------------------------------------------===//
 def fpimm0 : PatLeaf<(fpimm), [{
-  return N->isExactlyValue(+0.0);
+  return N->isExactlyValue(+0.0) || N->isExactlyValue(-0.0);
 }]>;
 
 def : Pat<(f32 fpimm0), (MTC1 ZERO)>;