diff --git a/core/embed/gfx/bitblt/gfx_bitblt_rgba8888.c b/core/embed/gfx/bitblt/gfx_bitblt_rgba8888.c
index 015b0c9d68..6329946381 100644
--- a/core/embed/gfx/bitblt/gfx_bitblt_rgba8888.c
+++ b/core/embed/gfx/bitblt/gfx_bitblt_rgba8888.c
@@ -165,14 +165,26 @@ void gfx_rgba8888_blend_mono8(const gfx_bitblt_t* bb) {
     uint8_t* src_ptr = (uint8_t*)bb->src_row + bb->src_x;
     uint16_t height = bb->height;
 
-    while (height-- > 0) {
-      for (int x = 0; x < bb->width; x++) {
-        uint8_t fg_alpha = src_ptr[x];
-        dst_ptr[x] = gfx_color32_blend_a8(
-            bb->src_fg, gfx_color32_to_color(dst_ptr[x]), fg_alpha);
+    if (bb->src_alpha == 255) {
+      while (height-- > 0) {
+        for (int x = 0; x < bb->width; x++) {
+          uint8_t fg_alpha = src_ptr[x];
+          dst_ptr[x] = gfx_color32_blend_a8(
+              bb->src_fg, gfx_color32_to_color(dst_ptr[x]), fg_alpha);
+        }
+        dst_ptr += bb->dst_stride / sizeof(*dst_ptr);
+        src_ptr += bb->src_stride / sizeof(*src_ptr);
+      }
+    } else {
+      while (height-- > 0) {
+        for (int x = 0; x < bb->width; x++) {
+          uint8_t fg_alpha = (src_ptr[x] * bb->src_alpha) / 255;
+          dst_ptr[x] = gfx_color32_blend_a8(
+              bb->src_fg, gfx_color32_to_color(dst_ptr[x]), fg_alpha);
+        }
+        dst_ptr += bb->dst_stride / sizeof(*dst_ptr);
+        src_ptr += bb->src_stride / sizeof(*src_ptr);
       }
-      dst_ptr += bb->dst_stride / sizeof(*dst_ptr);
-      src_ptr += bb->src_stride / sizeof(*src_ptr);
     }
   }
 }
diff --git a/core/embed/gfx/bitblt/stm32/dma2d_bitblt.c b/core/embed/gfx/bitblt/stm32/dma2d_bitblt.c
index d2ff25fb34..7379ca0fa7 100644
--- a/core/embed/gfx/bitblt/stm32/dma2d_bitblt.c
+++ b/core/embed/gfx/bitblt/stm32/dma2d_bitblt.c
@@ -786,6 +786,9 @@ bool dma2d_rgba8888_blend_mono8(const gfx_bitblt_t* bb) {
     return false;
   }
 
+  uint32_t src_fg =
+      gfx_color32_replace_a(gfx_color_to_color32(bb->src_fg), bb->src_alpha);
+
   drv->handle.Init.ColorMode = DMA2D_OUTPUT_ARGB8888;
   drv->handle.Init.Mode = DMA2D_M2M_BLEND;
   drv->handle.Init.OutputOffset = bb->dst_stride / sizeof(uint32_t) - bb->width;
@@ -793,8 +796,8 @@ bool dma2d_rgba8888_blend_mono8(const gfx_bitblt_t* bb) {
 
   drv->handle.LayerCfg[1].InputColorMode = DMA2D_INPUT_A8;
   drv->handle.LayerCfg[1].InputOffset = bb->src_stride - bb->width;
-  drv->handle.LayerCfg[1].AlphaMode = 0;
-  drv->handle.LayerCfg[1].InputAlpha = gfx_color_to_color32(bb->src_fg);
+  drv->handle.LayerCfg[1].AlphaMode = DMA2D_COMBINE_ALPHA;
+  drv->handle.LayerCfg[1].InputAlpha = src_fg;
   HAL_DMA2D_ConfigLayer(&drv->handle, 1);
 
   drv->handle.LayerCfg[0].InputColorMode = DMA2D_INPUT_ARGB8888;
diff --git a/core/embed/gfx/inc/gfx/gfx_color.h b/core/embed/gfx/inc/gfx/gfx_color.h
index 4b0a10f7b3..235eeceebf 100644
--- a/core/embed/gfx/inc/gfx/gfx_color.h
+++ b/core/embed/gfx/inc/gfx/gfx_color.h
@@ -86,6 +86,8 @@ typedef uint32_t gfx_color32_t;
 #define gfx_color32_to_b(c) (((c) & 0x000000FF) >> 0)
 // Extracts alpha component from gfx_color32_t
 #define gfx_color32_to_a(c) (((c) & 0xFF000000) >> 24)
+// Sets alpha component of gfx_color32_t
+#define gfx_color32_replace_a(c, a) (((c) & 0x00FFFFFF) | ((a) << 24))
 
 // 4-bit linear interpolation between `fg` and `bg`
 #define a4_lerp(fg, bg, alpha) (((fg) * (alpha) + ((bg) * (15 - (alpha)))) / 15)