diff --git a/fish/functions/jvm.fish b/fish/functions/jvm.fish
index e07c5af..c8f4258 100644
--- a/fish/functions/jvm.fish
+++ b/fish/functions/jvm.fish
@@ -1,21 +1,21 @@
-function jvm --argument-names __jvm_version
+function jvm --argument-names jvm_version
     # Only works on Mac
     if test (uname -s) != Darwin
         echo "Unsupported kernel: "(uname -s)
         return 1
     end
 
-    if test -z "$__jvm_version"
+    if test -z "$jvm_version"
         echo "Usage: jvm <java_version>"
         #echo
         #/usr/libexec/java_home --verbose
         return 2
     end
 
-    set --local __jvm_homedir (/usr/libexec/java_home --version $__jvm_version)
+    set --local jvm_homedir (/usr/libexec/java_home --version $jvm_version)
 
     if test $status -eq 0
-        echo "Setting JAVA_HOME to $__jvm_homedir"
-        set -gx JAVA_HOME $__jvm_homedir
+        echo "Setting JAVA_HOME to $jvm_homedir"
+        set -gx JAVA_HOME $jvm_homedir
     end
 end