diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 34e601ccaa..e009016800 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -1154,7 +1154,6 @@ void LCodeGen::EmitSignedIntegerDivisionByConstant(
     Register scratch,
     LEnvironment* environment) {
   ASSERT(!AreAliased(dividend, scratch, at, no_reg));
-  ASSERT(LChunkBuilder::HasMagicNumberForDivisor(divisor));
 
   uint32_t divisor_abs = abs(divisor);
 
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 38ac19f609..300c0c6cc7 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1389,8 +1389,6 @@ LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) {
     LOperand* dividend = UseRegister(instr->left());
     LOperand* divisor = UseRegisterOrConstant(right);
     LOperand* remainder = TempRegister();
-    ASSERT(right->IsConstant() &&
-           HConstant::cast(right)->HasInteger32Value());
     return AssignEnvironment(DefineAsRegister(
           new(zone()) LMathFloorOfDiv(dividend, divisor, remainder)));
 }