diff --git a/command.h b/command.h
index ed1d742884..c9ff24ed1f 100644
--- a/command.h
+++ b/command.h
@@ -214,8 +214,6 @@ enum event_command
    CMD_EVENT_SAVE_FILES
 };
 
-bool command_set_shader(const char *arg);
-
 /**
  * command_event:
  * @cmd                  : Command index.
diff --git a/retroarch.c b/retroarch.c
index c652c36f4a..0e19b9ff36 100644
--- a/retroarch.c
+++ b/retroarch.c
@@ -1183,6 +1183,8 @@ static bool is_narrator_running(void);
 static bool accessibility_startup_message(void);
 #endif
 
+static bool command_set_shader(const char *arg);
+
 static bool midi_driver_read(uint8_t *byte);
 static bool midi_driver_write(uint8_t byte, uint32_t delta_time);
 static bool midi_driver_output_enabled(void);
@@ -3968,7 +3970,7 @@ bool retroarch_apply_shader(enum rarch_shader_type type, const char *preset_path
 #endif
 }
 
-bool command_set_shader(const char *arg)
+static bool command_set_shader(const char *arg)
 {
 #if defined(HAVE_CG) || defined(HAVE_GLSL) || defined(HAVE_SLANG) || defined(HAVE_HLSL)
    enum rarch_shader_type type = video_shader_parse_type(arg);