diff --git a/mlir/include/mlir-c/IR.h b/mlir/include/mlir-c/IR.h
--- a/mlir/include/mlir-c/IR.h
+++ b/mlir/include/mlir-c/IR.h
@@ -713,7 +713,7 @@
 //===----------------------------------------------------------------------===//
 
 /// Checks whether a type id is null.
-MLIR_CAPI_EXPORTED static inline bool mlirTypeIDIsNull(MlirTypeID typeID) {
+MLIR_CAPI_EXPORTED inline bool mlirTypeIDIsNull(MlirTypeID typeID) {
   return !typeID.ptr;
 }