diff --git a/inputparser.py b/inputparser.py
index 33f2650..3a8079e 100644
--- a/inputparser.py
+++ b/inputparser.py
@@ -30,6 +30,10 @@ def validify_section(string):
         changed = True
         string = "NUM" + string
 
+    if '[' in string:
+        changed = True
+        string = string.replace("[", "_").replace("]", "")
+
     if changed:
         print("    Section {} replaced with {}".format(original, string))
     return string
@@ -55,6 +59,10 @@ def validify_keyword(string):
         changed = True
         string = "NUM" + string
 
+    if '[' in string:
+        changed = True
+        string = string.replace("[", "_").replace("]", "")
+
     if changed:
         print("    Keyword {} replaced with {}".format(original, string))