diff --git a/docker/Dockerfile b/docker/Dockerfile
index 530ebf4..5c1b94e 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -27,6 +27,7 @@ RUN apt-get update && apt-get install -y \
         clang-tidy-$CLANG_VERSION \
         nodejs \
         npm \
+        pmccabe \
         enchant-2 && \
     pip3 install gitlint && \
     pip3 install license-expression && \
diff --git a/his_checker.py b/his_checker.py
index 2ec03e9..d4f539b 100755
--- a/his_checker.py
+++ b/his_checker.py
@@ -9,9 +9,30 @@
 
 import sys
 import argparse
+import os
+
+CYCLOMATIC_THRESHOLD = 10
+
+def process_complexity(files):
+
+    """Process McCabe Cyclomatic Complexity for each function in a file"""
+
+    metric_fail = 0
+    cc_tool = "pmccabe -c "
+    print("== Checking McCabe Cyclomatic Complexity metric ==")
+    for file in files.files:
+        sline = os.popen(cc_tool + str(file)).read().split('\n')
+        for fields in [line.split('\t') for line in sline[:-1]]:
+            if int(fields[0]) > CYCLOMATIC_THRESHOLD:
+                fields[5] = fields[5][fields[5].find("src"):]
+                print("At " + fields[5] + " has a complexity of "+ fields[0]
+                      + ". The maximum is "+str(CYCLOMATIC_THRESHOLD))
+                metric_fail += 1
+    print("== Check done with " + str(metric_fail) + " error(s) ==\n")
+    return metric_fail
 
 if __name__ == "__main__":
-    METRICS_LIST = []
+    METRICS_LIST = [process_complexity]
     CHECK_FAIL = 0
     PARSER = argparse.ArgumentParser()
     PARSER.add_argument("files", nargs="+", help="The files to process")