diff --git a/src/rlgl.h b/src/rlgl.h
index 3ff6d7e2a..8ee602644 100644
--- a/src/rlgl.h
+++ b/src/rlgl.h
@@ -4993,7 +4993,7 @@ static int rlGetPixelDataSize(int width, int height, int format)
         default: break;
     }
 
-    float bytesPerPixel = (float)bpp/8.0f;
+    double bytesPerPixel = (double)bpp/8.0;
     dataSize = (int)(bytesPerPixel*width*height); // Total data size in bytes
 
     // Most compressed formats works on 4x4 blocks,
diff --git a/src/rtextures.c b/src/rtextures.c
index 9359f9219..5fa01c9df 100644
--- a/src/rtextures.c
+++ b/src/rtextures.c
@@ -5403,7 +5403,7 @@ int GetPixelDataSize(int width, int height, int format)
         default: break;
     }
 
-    float bytesPerPixel = (float)bpp/8.0f;
+    double bytesPerPixel = (double)bpp/8.0;
     dataSize = (int)(bytesPerPixel*width*height); // Total data size in bytes
 
     // Most compressed formats works on 4x4 blocks,