diff --git a/bam2fastx.wdl b/bam2fastx.wdl
index 110441eccf2cbe4751155b7b8020b5a02ec32de9..0bdccca8db6abfcc9ae3b99c721796a7f0b1af4f 100644
--- a/bam2fastx.wdl
+++ b/bam2fastx.wdl
@@ -35,7 +35,7 @@ task Bam2Fasta {
         String dockerImage = "quay.io/biocontainers/bam2fastx:1.3.1--hf05d43a_1"
     }
 
-    command <<<
+    command {
         set -e
         mkdir -p "$(dirname ~{outputPrefix})"
 
@@ -44,13 +44,13 @@ task Bam2Fasta {
         bamFiles=""
         for bamFile in ~{sep=" " bam}
         do
-            ln -s ${bamFile} ./
-            bamFiles=${bamFiles}" ./$(basename ${bamFile})"
+            ln $bamFile .
+            bamFiles=$bamFiles" $(basename $bamFile)"
         done
 
-        for indexFile in ~{sep=" " bamIndex}
+        for index in ~{sep=" " bamIndex}
         do
-            ln -s ${indexFile} ./
+            ln $index .
         done
 
         bam2fasta \
@@ -58,8 +58,8 @@ task Bam2Fasta {
         -c ~{compressionLevel} \
         ~{true="--split-barcodes" false="" splitByBarcode} \
         ~{"--seqid-prefix " + seqIdPrefix} \
-        ${bamFiles}
-    >>>
+        $bamFiles
+    }
 
     output {
         File fastaFile = outputPrefix + ".fasta.gz"
@@ -103,7 +103,7 @@ task Bam2Fastq {
         String dockerImage = "quay.io/biocontainers/bam2fastx:1.3.1--hf05d43a_1"
     }
 
-    command <<<
+    command {
         set -e
         mkdir -p "$(dirname ~{outputPrefix})"
 
@@ -112,8 +112,13 @@ task Bam2Fastq {
         bamFiles=""
         for bamFile in ~{sep=" " bam}
         do
-            fullPathBam=$(readlink -f ${bamFile})
-            bamFiles=${bamFiles}" ${fullPathBam}"
+            ln $bamFile .
+            bamFiles=$bamFiles" $(basename $bamFile)"
+        done
+
+        for index in ~{sep=" " bamIndex}
+        do
+            ln $index .
         done
 
         bam2fastq \
@@ -121,8 +126,8 @@ task Bam2Fastq {
         -c ~{compressionLevel} \
         ~{true="--split-barcodes" false="" splitByBarcode} \
         ~{"--seqid-prefix " + seqIdPrefix} \
-        ${bamFiles}
-    >>>
+        $bamFiles
+    }
 
     output {
         File fastqFile = outputPrefix + ".fastq.gz"