diff --git a/src/template.c b/src/template.c
index acf5632..38aeeed 100644
--- a/src/template.c
+++ b/src/template.c
@@ -139,7 +139,7 @@ main(void)
 		// 4. if bit depth is less than 8, stretch it
 #if BIT_DEPTH < 8
 		sample_res = (SAMPLE_TYPE)
-			((long double) buffer[w] * ((long double) BIT_DEPTH / 8.L));
+			((long double) sample_res * ((long double) BIT_DEPTH / 8.L));
 #endif
 
 		// 5. save sample into buffer