diff --git a/include/freerdp/assistance.h b/include/freerdp/assistance.h
index 23ce9339e..48301a2ae 100644
--- a/include/freerdp/assistance.h
+++ b/include/freerdp/assistance.h
@@ -77,7 +77,7 @@ FREERDP_API int freerdp_assistance_decrypt(rdpAssistanceFile* file, const char*
 
 FREERDP_API int freerdp_client_populate_settings_from_assistance_file(rdpAssistanceFile* file, rdpSettings* settings);
 
-FREERDP_API rdpAssistanceFile* freerdp_assistance_file_new();
+FREERDP_API rdpAssistanceFile* freerdp_assistance_file_new(void);
 FREERDP_API void freerdp_assistance_file_free(rdpAssistanceFile* file);
 
 #ifdef __cplusplus
diff --git a/libfreerdp/common/assistance.c b/libfreerdp/common/assistance.c
index 2855a2b0a..9e4702e7c 100644
--- a/libfreerdp/common/assistance.c
+++ b/libfreerdp/common/assistance.c
@@ -1193,7 +1193,7 @@ int freerdp_client_populate_settings_from_assistance_file(rdpAssistanceFile* fil
 	return 1;
 }
 
-rdpAssistanceFile* freerdp_assistance_file_new()
+rdpAssistanceFile* freerdp_assistance_file_new(void)
 {
 	return (rdpAssistanceFile*) calloc(1, sizeof(rdpAssistanceFile));
 }