diff --git a/source/lib/JMSLab/tablefill.py b/source/lib/JMSLab/tablefill.py
index 05dfce6..3346d76 100644
--- a/source/lib/JMSLab/tablefill.py
+++ b/source/lib/JMSLab/tablefill.py
@@ -101,7 +101,7 @@ def insert_tables_lyx(args, tables):
                 while search_table is True:
                     i += 1
                     if re.match('^.*###', lyx_text[i]):
-                        lyx_text[i] = lyx_text[i].replace('###', tables[tag][entry_count])
+                        lyx_text[i] = lyx_text[i].replace('###', ToUnicodeMinus(tables[tag][entry_count]))
                         entry_count += 1
 
                     elif re.match(r'^.*#\d+#', lyx_text[i]) or re.match(r'^.*#\d+,#', lyx_text[i]):
@@ -112,7 +112,7 @@ def insert_tables_lyx(args, tables):
                             rounded_entry = round_entry(entry_tag, tables[tag][entry_count])
                             if re.match(r'^.*#\d+,#', lyx_text[i]):
                                 rounded_entry = insert_commas(rounded_entry)
-                        lyx_text[i] = lyx_text[i].replace('#' + entry_tag + '#', rounded_entry)
+                        lyx_text[i] = lyx_text[i].replace('#' + entry_tag + '#', ToUnicodeMinus(rounded_entry))
                         entry_count += 1
 
                     elif lyx_text[i] == '</lyxtabular>\n':
@@ -137,7 +137,7 @@ def insert_tables_latex(args, tables):
                     lyx_text_i = lyx_text[i].split("&")
                     for col in range(len(lyx_text_i)):
                         if re.match('^.*###', lyx_text_i[col]):
-                            lyx_text_i[col] = lyx_text_i[col].replace('###', tables[tag][entry_count])
+                            lyx_text_i[col] = lyx_text_i[col].replace('###', ToUnicodeMinus(tables[tag][entry_count]))
                             entry_count += 1
 
                         elif re.match(r'^.*#\d+#', lyx_text_i[col]) or re.match(r'^.*#\d+,#', lyx_text_i[col]):
@@ -148,7 +148,7 @@ def insert_tables_latex(args, tables):
                                 rounded_entry = round_entry(entry_tag, tables[tag][entry_count])
                                 if re.match(r'^.*#\d+,#', lyx_text_i[col]):
                                     rounded_entry = insert_commas(rounded_entry)
-                            lyx_text_i[col] = lyx_text_i[col].replace('#' + entry_tag + '#', rounded_entry)
+                            lyx_text_i[col] = lyx_text_i[col].replace('#' + entry_tag + '#', ToUnicodeMinus(rounded_entry))
                             entry_count += 1
 
                     lyx_text[i] = "&".join(lyx_text_i)
@@ -157,6 +157,10 @@ def insert_tables_latex(args, tables):
     return lyx_text
 
 
+def ToUnicodeMinus(s):
+    return '\u2212' + s[1:] if s.startswith('-') else s
+
+
 def round_entry(entry_tag, entry):
     round_to = int(entry_tag.replace(',', ''))
     decimal_place = round(pow(0.1, round_to), round_to)