diff --git a/java/ql/src/semmle/code/java/StringFormat.qll b/java/ql/src/semmle/code/java/StringFormat.qll
index 18ff3307b2a..28f74ad9bbe 100644
--- a/java/ql/src/semmle/code/java/StringFormat.qll
+++ b/java/ql/src/semmle/code/java/StringFormat.qll
@@ -1,3 +1,6 @@
+/**
+ * Provides classes and predicates for reasoning about string formatting.
+ */
 import java
 import dataflow.DefUse
 
diff --git a/java/ql/src/semmle/code/java/dataflow/FlowSources.qll b/java/ql/src/semmle/code/java/dataflow/FlowSources.qll
index 85f4d8677e7..5dd2cbb7e22 100644
--- a/java/ql/src/semmle/code/java/dataflow/FlowSources.qll
+++ b/java/ql/src/semmle/code/java/dataflow/FlowSources.qll
@@ -1,3 +1,6 @@
+/**
+ * Provides classes representing various flow sources for taint tracking.
+ */
 import java
 import semmle.code.java.dataflow.DataFlow
 import semmle.code.java.dataflow.TaintTracking