diff --git a/retroarch.c b/retroarch.c
index d6455f149c..24e0ae91d5 100644
--- a/retroarch.c
+++ b/retroarch.c
@@ -168,7 +168,6 @@
 #include "retroarch.h"
 
 #ifdef HAVE_RUNAHEAD
-#include "runahead/dirty_input.h"
 #include "runahead/copy_load_info.h"
 #include "runahead/mylist.h"
 #include "runahead/mem_util.h"
@@ -706,6 +705,9 @@ static bool secondary_core_create(void)
 
 static void secondary_core_input_poll_null(void) { }
 
+static int16_t input_state_get_last(unsigned port,
+      unsigned device, unsigned index, unsigned id);
+
 bool secondary_core_run_use_last_input(void)
 {
    retro_input_poll_t old_poll_function;
@@ -13477,7 +13479,7 @@ static void input_state_set_last(unsigned port, unsigned device,
    element->state[id] = value;
 }
 
-int16_t input_state_get_last(unsigned port,
+static int16_t input_state_get_last(unsigned port,
       unsigned device, unsigned index, unsigned id)
 {
    unsigned i;
diff --git a/runahead/dirty_input.h b/runahead/dirty_input.h
deleted file mode 100644
index 6428fe45ba..0000000000
--- a/runahead/dirty_input.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef __DIRTY_INPUT_H___
-#define __DIRTY_INPUT_H___
-
-#include <boolean.h>
-#include <retro_common_api.h>
-
-RETRO_BEGIN_DECLS
-
-int16_t input_state_get_last(unsigned port,
-   unsigned device, unsigned index, unsigned id);
-
-RETRO_END_DECLS
-
-#endif