diff --git a/src/template.c b/src/template.c
index b567b4f..dde3ae4 100644
--- a/src/template.c
+++ b/src/template.c
@@ -31,7 +31,9 @@
 #define CHANNELS `channels`
 #define LENGTH `length`
 
-#if BIT_DEPTH <= 8
+#define BITS_PER_BYTE 8
+
+#if BIT_DEPTH <= BITS_PER_BYTE
 # define SAMPLE_TYPE uint8_t
 #elif BIT_DEPTH >= 16
 # if IS_SIGNED
@@ -192,11 +194,11 @@ main(void)
 		 * in the file format structure
 		 */,
 		sample_rate = SAMPLE_RATE,
-		byte_rate = (SAMPLE_RATE * BIT_DEPTH * CHANNELS) / 8;
+		byte_rate = (SAMPLE_RATE * BIT_DEPTH * CHANNELS) / BITS_PER_BYTE;
 	uint16_t fmt_type = 1, // format type is PCM
 		channels = CHANNELS,
-		block_align = (BIT_DEPTH * CHANNELS) / 8,
-		bit_depth = BIT_DEPTH > 8 ? BIT_DEPTH : 8;
+		block_align = (BIT_DEPTH * CHANNELS) / BITS_PER_BYTE,
+		bit_depth = BIT_DEPTH > BITS_PER_BYTE ? BIT_DEPTH : BITS_PER_BYTE;
 
 	// 3. write headers
 	// <L = Little-endian or B = Big-endian> : <name> : <bytes of field>
@@ -244,9 +246,9 @@ main(void)
 #if FP_RETURN_TYPE
 			+ 1
 #endif
-#if BIT_DEPTH < 8
+#if BIT_DEPTH < BITS_PER_BYTE
 		,
-		bit_depth_stretch = ((long double) BIT_DEPTH) / 8.L
+		bit_depth_stretch = BIT_DEPTH / BITS_PER_BYTE
 #endif
 		;
 
@@ -288,8 +290,8 @@ main(void)
 				((uintmax_t) bytebeat_res & bit_depth_limiter);
 #endif
 
-			// 4. if bit depth is less than 8, stretch it
-#if BIT_DEPTH < 8
+			// 4. if bit depth is less than BITS_PER_BYTE, stretch it
+#if BIT_DEPTH < BITS_PER_BYTE
 			sample_res = (SAMPLE_TYPE)
 				((long double) sample_res * bit_depth_stretch);
 #endif