diff --git a/ui/drivers/cocoa/ui_cocoa_application.m b/ui/drivers/cocoa/ui_cocoa_application.m
index 74b2c5ebe7..d757b7ddf3 100644
--- a/ui/drivers/cocoa/ui_cocoa_application.m
+++ b/ui/drivers/cocoa/ui_cocoa_application.m
@@ -21,7 +21,7 @@
 
 #include "../../ui_companion_driver.h"
 
-static void ui_application_cocoa_process_events(void *data)
+static void ui_application_cocoa_process_events(void)
 {
 }
 
diff --git a/ui/drivers/null/ui_null_application.c b/ui/drivers/null/ui_null_application.c
index 6704a22cec..6d49b0878c 100644
--- a/ui/drivers/null/ui_null_application.c
+++ b/ui/drivers/null/ui_null_application.c
@@ -21,7 +21,7 @@
 
 #include "../../ui_companion_driver.h"
 
-static void ui_application_null_process_events(void *data)
+static void ui_application_null_process_events(void)
 {
 }
 
diff --git a/ui/drivers/win32/ui_win32_application.c b/ui/drivers/win32/ui_win32_application.c
index 2b0bf4b2f9..7120bb3173 100644
--- a/ui/drivers/win32/ui_win32_application.c
+++ b/ui/drivers/win32/ui_win32_application.c
@@ -21,7 +21,7 @@
 
 #include "../../ui_companion_driver.h"
 
-static void ui_application_win32_process_events(void *data)
+static void ui_application_win32_process_events(void)
 {
 }
 
diff --git a/ui/ui_companion_driver.h b/ui/ui_companion_driver.h
index 44710f02af..4c0bcb5b71 100644
--- a/ui/ui_companion_driver.h
+++ b/ui/ui_companion_driver.h
@@ -33,7 +33,7 @@ RETRO_BEGIN_DECLS
 
 typedef struct ui_application
 {
-   void (*process_events)(void *data);
+   void (*process_events)(void);
    const char *ident;
 } ui_application_t;