diff --git a/ui/ui_bombjack.h b/ui/ui_bombjack.h
index 6136274f..172aa4a3 100644
--- a/ui/ui_bombjack.h
+++ b/ui/ui_bombjack.h
@@ -72,8 +72,8 @@ typedef struct {
     bool open;
     int hovered_palette_column;
     ui_dbg_texture_callbacks_t texture_cbs;
-    void* tex_16x16[24];
-    void* tex_32x32[24];
+    ui_dbg_texture_t tex_16x16[24];
+    ui_dbg_texture_t tex_32x32[24];
     uint32_t pixel_buffer[1024];
 } ui_bombjack_video_t;
 
diff --git a/ui/ui_dbg.h b/ui/ui_dbg.h
index b2f59563..b4701502 100644
--- a/ui/ui_dbg.h
+++ b/ui/ui_dbg.h
@@ -134,6 +134,8 @@ typedef struct ui_dbg_user_breaktype_t {
     bool show_val16;            /* show the value field as word? */
 } ui_dbg_breaktype_t;
 
+/* texture handle compatible with Dear ImGui */
+typedef uint64_t ui_dbg_texture_t;
 /* forward decl */
 struct ui_dbg_t;
 /* callback for reading a byte from memory */
@@ -141,11 +143,11 @@ typedef uint8_t (*ui_dbg_read_t)(int layer, uint16_t addr, void* user_data);
 /* callback for evaluating uer breakpoints, return breakpoint index, or -1 */
 typedef int (*ui_dbg_user_break_t)(struct ui_dbg_t* win, int trap_id, uint64_t pins, void* user_data);
 /* a callback to create a dynamic-update RGBA8 UI texture, needs to return an ImTextureID handle */
-typedef void* (*ui_dbg_create_texture_t)(int w, int h);
+typedef ui_dbg_texture_t (*ui_dbg_create_texture_t)(int w, int h);
 /* callback to update a UI texture with new data */
-typedef void (*ui_dbg_update_texture_t)(void* tex_handle, void* data, int data_byte_size);
+typedef void (*ui_dbg_update_texture_t)(ui_dbg_texture_t tex_handle, void* data, int data_byte_size);
 /* callback to destroy a UI texture */
-typedef void (*ui_dbg_destroy_texture_t)(void* tex_handle);
+typedef void (*ui_dbg_destroy_texture_t)(ui_dbg_texture_t tex_handle);
 /* callback when emulator is being rebootet */
 typedef void (*ui_dbg_reboot_t)(void);
 /* callback when emulator is being reset */
@@ -270,7 +272,7 @@ typedef struct ui_dbg_heatmap_t {
     int tex_width, tex_height;
     int tex_width_uicombo_state;
     int next_tex_width;
-    void* texture;
+    ui_dbg_texture_t texture;
     bool show_ops, show_reads, show_writes;
     int autoclear_interval; /* 0: no autoclear */
     int scale;
diff --git a/ui/ui_snapshot.h b/ui/ui_snapshot.h
index d409b256..a39c2cad 100644
--- a/ui/ui_snapshot.h
+++ b/ui/ui_snapshot.h
@@ -51,6 +51,8 @@ extern "C" {
 
 #define UI_SNAPSHOT_MAX_SLOTS (8)
 
+// Dear ImGui compatible texture handle
+typedef uint64_t ui_snapshot_texture_t;
 // callback function to save snapshot to a numbered slot
 typedef void (*ui_snapshot_save_t)(size_t slot_index);
 // callback function to load snapshot from numbered slot
@@ -58,7 +60,7 @@ typedef bool (*ui_snapshot_load_t)(size_t slot_index);
 
 // a snapshot screenshot wrapper struct
 typedef struct {
-    void* texture;
+    ui_snapshot_texture_t texture;
     bool portrait;
 } ui_snapshot_screenshot_t;