diff --git a/src/overlay_params.c b/src/overlay_params.c
index 14272ea5..c907b80b 100644
--- a/src/overlay_params.c
+++ b/src/overlay_params.c
@@ -27,6 +27,8 @@
 #include <string.h>
 #include <errno.h>
 #include <sys/sysinfo.h>
+#include <X11/Xlib.h>
+#include "X11/keysym.h"
 
 #include "overlay_params.h"
 
@@ -73,6 +75,18 @@ parse_font_size(const char *str)
    return strtof(str, NULL);
 }
 
+static KeySym
+parse_toggle_hud(const char *str)
+{
+   return XStringToKeysym(str);
+}
+
+static KeySym
+parse_toggle_logging(const char *str)
+{
+   return XStringToKeysym(str);
+}
+
 static uint32_t
 parse_fps_sampling_period(const char *str)
 {
@@ -183,6 +197,8 @@ parse_overlay_env(struct overlay_params *params,
    params->width = 280;
    params->height = 140;
    params->control = -1;
+   params->toggle_hud = 65481;
+   params->toggle_logging = 65471;
 
    if (!env)
       return;
@@ -208,8 +224,11 @@ parse_overlay_env(struct overlay_params *params,
    }
    // if font_size is used and height has not been changed from default
    // increase height as needed based on font_size
-   bool heightChanged = false;
    
+   // params->toggle_hud = "F12";
+
+   bool heightChanged = false;
+
    if (params->height != 140)
       heightChanged = true;
 
diff --git a/src/overlay_params.h b/src/overlay_params.h
index fbcfe80a..fb16380a 100644
--- a/src/overlay_params.h
+++ b/src/overlay_params.h
@@ -53,6 +53,8 @@ extern "C" {
    OVERLAY_PARAM_CUSTOM(no_display)                  \
    OVERLAY_PARAM_CUSTOM(control)                     \
    OVERLAY_PARAM_CUSTOM(font_size)                   \
+   OVERLAY_PARAM_CUSTOM(toggle_hud)                  \
+   OVERLAY_PARAM_CUSTOM(toggle_logging)              \
    OVERLAY_PARAM_CUSTOM(help)
 
 enum overlay_param_position {
@@ -82,6 +84,8 @@ struct overlay_params {
    unsigned width;
    unsigned height;
    float font_size;
+   int toggle_hud;
+   int toggle_logging;
 };
 
 const extern char *overlay_param_names[];