diff --git a/config/README.md b/config/README.md
index 2dda19989..01fe3a763 100644
--- a/config/README.md
+++ b/config/README.md
@@ -57,9 +57,9 @@ Forgo the use of FDR peak calling and instead call peaks for regions with at lea
 ```
 min_per_acc_peak = 0.25
 ```
-Apply a percent actuation filter on top of the FDR peak calling. Default is `0.0` for no filter.
+Apply a percent actuation filter on top of the FDR peak calling. Default is `0.10`; set to `0.0` for no filter.
 ```
-min_frac_accessible: 0.0
+min_frac_accessible: 0.10
 ```
 Process only chromosomes matching this regular expression:
 ```
diff --git a/workflow/Snakefile b/workflow/Snakefile
index dc1e50fdb..967e69371 100644
--- a/workflow/Snakefile
+++ b/workflow/Snakefile
@@ -56,7 +56,7 @@ if MIN_PER_ACC_PEAK is None:
     MIN_PER_ACC_PEAK = 0.0
 else:
     MAX_PEAK_FDR = 1.0
-MIN_FRAC_ACCESSIBLE = config.get("min_frac_accessible", 0)
+MIN_FRAC_ACCESSIBLE = config.get("min_frac_accessible", 0.10)
 
 # data filtering
 FILTER_FLAG = config.get("samtools-filter-flag", "260")  # 2308