diff --git a/computechecksums.sh b/computechecksums.sh
index f37864e..ef5df6b 100644
--- a/computechecksums.sh
+++ b/computechecksums.sh
@@ -1,9 +1,8 @@
 #!/bin/bash
-FILE='$1'
+FILE="$1"
 
 touch ./checksums.txt
-sha1sum $FILE >> ./checksums.txt
-md1sum $FILE >> ./checksums.txt
-md5sum $FILE >> ./checksums.txt
-sha256sum $FILE >> ./checksums.txt
+sha1sum "$FILE" >> ./checksums.txt
+md5sum "$FILE" >> ./checksums.txt
+sha256sum "$FILE" >> ./checksums.txt