diff --git a/CPAT.wdl b/CPAT.wdl
index 0c4e83db1f67d2a5fca475af8adb3076e73ed3d9..b92053d1e1fcdbe116fc845c845442fd1b7aeecc 100644
--- a/CPAT.wdl
+++ b/CPAT.wdl
@@ -11,7 +11,7 @@ task CPAT {
         # CPAT should not index the reference genome.
         Array[String]? startCodons
         Array[String]? stopCodons
-        String dockerTag = "v1.2.4_cv1"
+        String dockerImage = "biocontainers/cpat:v1.2.4_cv1"
     }
 
     # Some WDL magic in the command section to properly output the start and stopcodons to the command.
@@ -34,7 +34,7 @@ task CPAT {
     }
 
     runtime {
-        docker: "biocontainers/cpat:" + dockerTag
+        docker: dockerImage
     }
 }
 
diff --git a/gffread.wdl b/gffread.wdl
index 08b2e8d7cc8195edd0da76a83625a5c91292f58d..da99781b99529b4e452ae301a6eb2e67c6e2ccaf 100644
--- a/gffread.wdl
+++ b/gffread.wdl
@@ -10,7 +10,7 @@ task GffRead {
         String? proteinFastaPath
         String? filteredGffPath
         Boolean outputGtfFormat = false
-        String dockerTag = "0.9.12--0"
+        String dockerImage = "quay.io/biocontainers/gffread:0.9.12--0"
     }
 
     # The mkdirs below are hackish. It should be
@@ -41,6 +41,6 @@ task GffRead {
     }
 
     runtime {
-        docker: "quay.io/biocontainers/gffread:" + dockerTag
+        docker: dockerImage
     }
 }
\ No newline at end of file