diff --git a/tools/bzl/javadoc.bzl b/tools/bzl/javadoc.bzl
index 638721053d..754bd961cf 100644
--- a/tools/bzl/javadoc.bzl
+++ b/tools/bzl/javadoc.bzl
@@ -17,8 +17,8 @@
 def _impl(ctx):
     zip_output = ctx.outputs.zip
 
-    transitive_jars = depset(transitive = [l.java.transitive_deps for l in ctx.attr.libs])
-    source_jars = depset(transitive = [l.java.source_jars for l in ctx.attr.libs])
+    transitive_jars = depset(transitive = [j.java.transitive_deps for j in ctx.attr.libs])
+    source_jars = depset(transitive = [j.java.source_jars for j in ctx.attr.libs])
 
     transitive_jar_paths = [j.path for j in transitive_jars.to_list()]
     dir = ctx.outputs.zip.path + ".dir"
diff --git a/tools/bzl/junit.bzl b/tools/bzl/junit.bzl
index b4cd558938..f56dd65004 100644
--- a/tools/bzl/junit.bzl
+++ b/tools/bzl/junit.bzl
@@ -28,8 +28,8 @@ public class %s {}
 
 _PREFIXES = ("org", "com", "edu")
 
-def _SafeIndex(l, val):
-    for i, v in enumerate(l):
+def _SafeIndex(j, val):
+    for i, v in enumerate(j):
         if val == v:
             return i
     return -1
diff --git a/tools/bzl/pkg_war.bzl b/tools/bzl/pkg_war.bzl
index 5c07987732..72ed9f878f 100644
--- a/tools/bzl/pkg_war.bzl
+++ b/tools/bzl/pkg_war.bzl
@@ -76,11 +76,11 @@ def _war_impl(ctx):
 
     # Add lib
     transitive_libs = []
-    for l in ctx.attr.libs:
-        if hasattr(l, "java"):
-            transitive_libs.append(l.java.transitive_runtime_deps)
-        elif hasattr(l, "files"):
-            transitive_libs.append(l.files)
+    for j in ctx.attr.libs:
+        if hasattr(j, "java"):
+            transitive_libs.append(j.java.transitive_runtime_deps)
+        elif hasattr(j, "files"):
+            transitive_libs.append(j.files)
 
     transitive_lib_deps = depset(transitive = transitive_libs)
     for dep in transitive_lib_deps.to_list():
@@ -89,8 +89,8 @@ def _war_impl(ctx):
 
     # Add pgm lib
     transitive_pgmlibs = []
-    for l in ctx.attr.pgmlibs:
-        transitive_pgmlibs.append(l.java.transitive_runtime_deps)
+    for j in ctx.attr.pgmlibs:
+        transitive_pgmlibs.append(j.java.transitive_runtime_deps)
 
     transitive_pgmlib_deps = depset(transitive = transitive_pgmlibs)
     for dep in transitive_pgmlib_deps.to_list():