diff --git a/src/main/java/net/md_5/specialsource/InheritanceMap.java b/src/main/java/net/md_5/specialsource/InheritanceMap.java
index 5450837..759a560 100644
--- a/src/main/java/net/md_5/specialsource/InheritanceMap.java
+++ b/src/main/java/net/md_5/specialsource/InheritanceMap.java
@@ -87,6 +87,13 @@ public class InheritanceMap implements InheritanceProvider {
         String line;
 
         while ((line = reader.readLine()) != null) {
+            int commentIndex = line.indexOf('#')
+            if (commentIndex != -1) {
+                line = line.substring(0, commentIndex)
+            }
+            if (line.isEmpty()) {
+                continue;
+            }
             String[] tokens = line.split(" ");
 
             if (tokens.length < 2) {