diff --git a/pipes/rules/reports.rules b/pipes/rules/reports.rules
index 95853c429..9d2fc4b33 100644
--- a/pipes/rules/reports.rules
+++ b/pipes/rules/reports.rules
@@ -63,5 +63,5 @@ rule consolidate_spike_count:
                 sample=read_samples_file(config["samples_per_run"]))
     output: '{dir}/summary.spike_count.txt'
     params: logid="all"
-    shell:  "{config[binDir]}/reports.py consolidate_spike_count {input} {output}"
+    shell:  "{config[binDir]}/reports.py consolidate_spike_count {dir}/spike_count {output}"
 
diff --git a/reports.py b/reports.py
index 71e6464f9..0a04d8978 100755
--- a/reports.py
+++ b/reports.py
@@ -199,10 +199,10 @@ def get_earliest_date(inDir):
 
 
 
-def consolidate_spike_count(inFiles, outFile):
+def consolidate_spike_count(inDir, outFile):
     '''Consolidate multiple spike count reports into one.'''
     with open(outFile, 'wt') as outf:
-        for fn in inFiles:
+        for fn in os.listdir(inDir):
             s = os.path.basename(fn)
             if not s.endswith('.spike_count.txt'):
                 raise Exception()
@@ -213,7 +213,7 @@ def consolidate_spike_count(inFiles, outFile):
                         spike, count = line.strip().split('\t')
                         outf.write('\t'.join([s, spike, count])+'\n')
 def parser_consolidate_spike_count(parser=argparse.ArgumentParser()):
-    parser.add_argument('inFiles', help='Input coverage files.', nargs='+')
+    parser.add_argument('inDir', help='Input spike count directory.')
     parser.add_argument('outFile', help='Output report file.')
     util.cmd.attach_main(parser, consolidate_spike_count, split_args=True)
     return parser