diff --git a/src/nnn.c b/src/nnn.c
index 047c0ae1..80874bbf 100644
--- a/src/nnn.c
+++ b/src/nnn.c
@@ -417,18 +417,6 @@ static uchar crc8fast(uchar const message[], size_t n)
 	return remainder;
 }
 
-/* Get platform block shift */
-static int get_blk_shift(void)
-{
-	int shift;
-	for (shift = 0; shift < 32; ++shift)
-	{
-		if ((1<<shift) & S_BLKSIZE)
-			break;
-	}
-	return shift;
-}
-
 /* Messages show up at the bottom */
 static void printmsg(const char *msg)
 {
@@ -2917,7 +2905,7 @@ nochange:
 					cfg.blkorder ^= 1;
 				nftw_fn = &sum_bsizes;
 				cfg.apparentsz = 0;
-				BLK_SHIFT = get_blk_shift();
+				BLK_SHIFT = ffs(S_BLKSIZE) - 1;
 			}
 
 			if (cfg.blkorder) {
@@ -3412,7 +3400,7 @@ int main(int argc, char *argv[])
 	int opt;
 
 	// Get platform block shift
-	BLK_SHIFT = get_blk_shift();
+	BLK_SHIFT = ffs(S_BLKSIZE) - 1;
 
 	/* Confirm we are in a terminal */
 	if (!isatty(0) || !isatty(1)) {