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
@@ -557,7 +557,7 @@
 static inline bool mlirValueIsNull(MlirValue value) { return !value.ptr; }
 
 /// Returns 1 if two values are equal, 0 otherwise.
-bool mlirValueEqual(MlirValue value1, MlirValue value2);
+MLIR_CAPI_EXPORTED bool mlirValueEqual(MlirValue value1, MlirValue value2);
 
 /// Returns 1 if the value is a block argument, 0 otherwise.
 MLIR_CAPI_EXPORTED bool mlirValueIsABlockArgument(MlirValue value);