diff --git a/scripts/cp-dataset-histos.sh b/scripts/cp-dataset-histos.sh
index 4e467fb..e912afa 100755
--- a/scripts/cp-dataset-histos.sh
+++ b/scripts/cp-dataset-histos.sh
@@ -4,7 +4,7 @@ set -euo pipefail
 #######################################################################################
 # This script automates the copying of histogram files from dataset directories
 # into a specified destination directory, while preserving the original directory
-# structure relative to the provided BASE_PATH.
+# structure, like:
 #
 # Usage:
 #   ./copy-histograms.sh <BASE_PATH> <DEST_DIR>
@@ -33,32 +33,44 @@ mkdir -p "$DEST_DIR"
 depth_to_datasets=$(python -m simprod_histogram.calc_depth_to_dataset_dirs "$BASE_PATH" 2>&1)
 
 #######################################################################################
-# Define a function to copy the single histogram file while preserving the directory structure
+# Copy!
 
-copy_file() {
+cp_histo() {
+    # Copies all histogram files (*.histo.hdf5) from a given dataset directory
+    # to a destination directory, preserving the directory structure relative
+    # to a specified base path (SIM). If multiple histogram files exist in the
+    # dataset directory, they are all copied.
     local src_dataset_dir="$1"
 
-    local histo_file="$src_dataset_dir"/*.histo.hdf5
-    if [ ! -f "$histo_file" ]; then
+    # Check for histo files
+    local histo_files=("$src_dataset_dir"/*.histo.hdf5)
+    if [ ! -e "${histo_files[0]}" ]; then
         echo "No histogram file found in $src_dataset_dir"
         return
     fi
 
     # Compute the relative path from 'sim'
-    # cp the filetree like:
+    # cp the file tree like:
     #   src_dataset_dir  = '.../sim/IceCube/2023/generated/neutrino-generator/22645'
     #   relative_path    = 'IceCube/2023/generated/neutrino-generator/22645'
     #   dest_dataset_dir = '$DEST_DIR/sim/IceCube/2023/generated/neutrino-generator/22645'
     local relative_path="${src_dataset_dir#"$SIM"/}"
-    local dest_dataset_dir="$DEST_DIR/"$SIM"/$relative_path"
+    local dest_dataset_dir="$DEST_DIR/$SIM/$relative_path"
     mkdir -p "$dest_dataset_dir"
 
-    # Copy the histogram file(s)
-    cp "$histo_file" "$dest_dataset_dir/"
-    echo "Copied $histo_file to $dest_dataset_dir"
+    # Loop through all matching files and copy them
+    local histo_file
+    for histo_file in "${histo_files[@]}"; do
+        if [ -f "$dest_dataset_dir/$(basename "$histo_file")" ]; then
+            echo "Histogram file already exists at $dest_dataset_dir (will not overwrite)"
+        else
+            cp "$histo_file" "$dest_dataset_dir/"
+            echo "Copied $histo_file to $dest_dataset_dir"
+        fi
+    done
 }
 
-export -f copy_file
+export -f copy_histo_file
 export BASE_PATH DEST_DIR SIM
 
 # Use find with -exec to copy files from each dataset
@@ -66,7 +78,7 @@ find "$BASE_PATH" \
     -mindepth "$depth_to_datasets" \
     -maxdepth "$depth_to_datasets" \
     -type d \
-    -exec bash -c 'copy_file "$0"' {} \;
+    -exec bash -c 'cp_histo "$0"' {} \;
 
 #######################################################################################