diff --git a/EleksTubeHAX_pio/src/TFTs.cpp b/EleksTubeHAX_pio/src/TFTs.cpp
index 1f94973..e07ac12 100644
--- a/EleksTubeHAX_pio/src/TFTs.cpp
+++ b/EleksTubeHAX_pio/src/TFTs.cpp
@@ -294,7 +294,7 @@ bool TFTs::LoadImageIntoBuffer(uint8_t file_index) {
   {
     read32(bmpFS); read32(bmpFS); read32(bmpFS); // size, w resolution, h resolution
     paletteSize = read32(bmpFS);
-    if (paletteSize == 0) paletteSize = bitDepth * bitDepth; // if 0, size is 2^bitDepth
+    if (paletteSize == 0) paletteSize = pow(2, bitDepth); // if 0, size is 2^bitDepth
     bmpFS.seek(14 + headerSize); // start of color palette
     for (uint16_t i = 0; i < paletteSize; i++) {
       palette[i] = read32(bmpFS);