diff --git a/paddle/capi/error.cpp b/paddle/capi/error.cpp
index 169b65f92104336d9ec12e2a5a6778db25080270..96ce31b45fc3f83237146443cbe4289af7bfa239 100644
--- a/paddle/capi/error.cpp
+++ b/paddle/capi/error.cpp
@@ -14,7 +14,7 @@ limitations under the License. */
 
 #include "error.h"
 
-const char* paddle_error_string(paddle_error err) {
+extern "C" const char* paddle_error_string(paddle_error err) {
   switch (err) {
     case kPD_NULLPTR:
       return "nullptr error";
diff --git a/paddle/capi/error.h b/paddle/capi/error.h
index 9d9d0ed63a5276c6b9a8747e1ee1fce6872bdc9e..2da9e0a3ef604fbcd53bac271c72ef33b3105152 100644
--- a/paddle/capi/error.h
+++ b/paddle/capi/error.h
@@ -29,9 +29,17 @@ typedef enum {
   kPD_UNDEFINED_ERROR = -1,
 } paddle_error;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * Error string for Paddle API.
  */
 PD_API const char* paddle_error_string(paddle_error err);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif