diff --git a/src/bin/mkdos/mkdos.cpp b/src/bin/mkdos/mkdos.cpp
index d1f3933e89..094ea1e8e9 100644
--- a/src/bin/mkdos/mkdos.cpp
+++ b/src/bin/mkdos/mkdos.cpp
@@ -322,7 +322,7 @@ status_t Initialize(int fatbits, const char *device, const char *label, bool nop
 			sectorPerCluster = 2;
 		if (size <= 4182016LL)				// smaller than fat32 must fail
 			sectorPerCluster = 0;
-	} if (fatbits == 32) {
+	} else if (fatbits == 32) {
 		sectorPerCluster = 64;				// default is 32k clusters
 		if (size <= (32 * 1024 * 1024 * 1024LL))	// up to 32GB, use 16k clusters
 			sectorPerCluster = 32;