diff --git a/src/rustllvm/rustllvm.def.in b/src/rustllvm/rustllvm.def.in
index f763e64fc6e..71c9425ab6e 100644
--- a/src/rustllvm/rustllvm.def.in
+++ b/src/rustllvm/rustllvm.def.in
@@ -24,6 +24,7 @@ LLVMAddDeadStoreEliminationPass
 LLVMAddDeadTypeEliminationPass
 LLVMAddDemoteMemoryToRegisterPass
 LLVMAddDestination
+LLVMAddEarlyCSEPass
 LLVMAddFunction
 LLVMAddFunctionAttr
 LLVMAddFunctionAttrsPass