diff --git a/.test/config_lint.yaml b/.test/config_lint.yaml
index d0e1e57..e043334 100644
--- a/.test/config_lint.yaml
+++ b/.test/config_lint.yaml
@@ -11,10 +11,11 @@ samplemanifest: "/opt2/.test/samples.test_lintr.tsv"
 # User parameters
 #####################################################################################
 # run sample contrasts
-run_contrasts: "Y" # Y or N
+run_contrasts: true
 contrasts: "/opt2/.test/contrasts.test.tsv"  # run_contrasts needs to be "Y"
-contrasts_fdr_cutoff: "0.05"
-contrasts_lfc_cutoff: "0.59" # FC of 1.5
+contrasts_fdr_cutoff: 0.05
+contrasts_lfc_cutoff: 0.59 # FC of 1.5
+run_go_enrichment: true
 
 # reference
 genome: "hg38"    # currently supports hg38, hg19 and mm10. Custom genome can be added with appropriate additions to "reference" section below.
diff --git a/config/config.yaml b/config/config.yaml
index 0bf0d34..7e85729 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -17,10 +17,11 @@ samplemanifest: "WORKDIR/config/samples.tsv"
 # User parameters
 #####################################################################################
 # run sample contrasts
-run_contrasts: "Y" # Y or N
-contrasts: "WORKDIR/config/contrasts.tsv"  # run_contrasts needs to be "Y"
-contrasts_fdr_cutoff: "0.05"
-contrasts_lfc_cutoff: "0.59" # FC of 1.5
+run_contrasts: true # true or false, no quotes
+contrasts: "WORKDIR/config/contrasts.tsv"  # run_contrasts needs to be `true`
+contrasts_fdr_cutoff: 0.05
+contrasts_lfc_cutoff: 0.59 # FC of 1.5
+run_go_enrichment: false # this step is long-running. use `true` if you would like to run it.
 
 # reference
 genome: "hg38"    # currently supports hg38, hg19 and mm10. Custom genome can be added with appropriate additions to "reference" section below.
diff --git a/docs/user-guide/preparing-files.md b/docs/user-guide/preparing-files.md
index 18f3d7c..547738a 100644
--- a/docs/user-guide/preparing-files.md
+++ b/docs/user-guide/preparing-files.md
@@ -30,7 +30,7 @@ The pipeline allows for the use of a species specific spike-in control, or the u
 
 For example for ecoli spike-in:
 ```
-run_contrasts: "Y"
+run_contrasts: true
 norm_method: "spikein"
 spikein_genome: "ecoli"
 spikein_reference:
@@ -41,7 +41,7 @@ spikein_reference:
 
 For example for drosophila spike-in:
 ```
-run_contrasts: "Y"
+run_contrasts: true
 norm_method: "spikein"
 spikein_genome: "drosophila"
 spikein_reference:
diff --git a/workflow/Snakefile b/workflow/Snakefile
index 011e479..3d808ba 100644
--- a/workflow/Snakefile
+++ b/workflow/Snakefile
@@ -97,7 +97,7 @@ def run_qc(wildcards):
 
 def run_contrasts(wildcards):
     files=[]
-    if config["run_contrasts"] == "Y":
+    if config["run_contrasts"]:
         files.append(join(RESULTSDIR,"replicate_sample.tsv"))
         
         # inputs for matrix
@@ -159,7 +159,7 @@ def get_rose(wildcards):
 
 def get_enrichment(wildcards):
     files=[]
-    if config["run_contrasts"] == "Y":
+    if config["run_contrasts"] and config['run_go_enrichment']:
         if (GENOME == "hg19") or (GENOME == "hg38"):
             if ("macs2_narrow" in PEAKTYPE) or ("macs2_broad" in PEAKTYPE):
                 t=expand(join(RESULTSDIR,"peaks","{qthresholds}","{peak_caller}","annotation","go_enrichment","{contrast_list}.{dupstatus}.txt"),peak_caller="macs2",qthresholds=QTRESHOLDS,contrast_list=CONTRAST_LIST,dupstatus=DUPSTATUS)
diff --git a/workflow/rules/annotations.smk b/workflow/rules/annotations.smk
index e88d864..389b18c 100644
--- a/workflow/rules/annotations.smk
+++ b/workflow/rules/annotations.smk
@@ -256,7 +256,7 @@ rule rose:
             echo "Less than 5 usable peaks detected (N=${{num_of_peaks}})" > {output.super_summit}
         fi
     """
-if config["run_contrasts"] == "Y":
+if config["run_contrasts"]:
     rule create_contrast_peakcaller_files:
         """
         Reads in all of the output from Rules create_contrast_data_files which match the same peaktype and merges them together
diff --git a/workflow/rules/init.smk b/workflow/rules/init.smk
index 8aa464b..e4e729a 100644
--- a/workflow/rules/init.smk
+++ b/workflow/rules/init.smk
@@ -185,7 +185,7 @@ QTRESHOLDS=config["quality_thresholds"]
 QTRESHOLDS=list(map(lambda x:x.strip(),QTRESHOLDS.split(",")))
 
 # set contrast settings
-if config["run_contrasts"] == "Y":
+if config["run_contrasts"]:
     print("#"*100)
     print("# Checking constrasts to run...")
     contrasts_table = config["contrasts"]