diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a95484efba2652d3dca7eb55938b7480427376d..c12fcecc86011dda577489e00b245b90c481e413 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ that users understand how the changes affect the new version.
 -->
 version 3.1.0
 ---------------------------
++ Samtools: Fix quotations in sort command.
 + Samtools SortByName is now called Sort.
 + Generalize sort task to now also sort by position, instead of just read name.
 + Add CreateSequenceDictionary task to picard.
diff --git a/samtools.wdl b/samtools.wdl
index ad7799cbac232305711cf942dce9dc01bfa9dc2c..5521c6aaa5f93badddc571acf400f52afa98de1f 100644
--- a/samtools.wdl
+++ b/samtools.wdl
@@ -191,10 +191,10 @@ task Sort {
         set -e
         mkdir -p "$(dirname ~{outputPath})"
         samtools sort \
-        "-l " ~{compressionLevel} \
+        -l ~{compressionLevel} \
         ~{true="-n" false="" sortByName} \
         ~{"--threads " + threads} \
-        "-o " ~{outputPath} \
+        -o ~{outputPath} \
         ~{inputBam}
     }