diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index b5ba86f1b19223..5af7561b2c0b17 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -866,6 +866,8 @@ The following exceptions are used as warning categories; see the
 
    Base class for warnings about dubious syntax.
 
+   This warning is emitted when compiling Python source code to bytecode.
+
 
 .. exception:: RuntimeWarning
 
diff --git a/Doc/library/warnings.rst b/Doc/library/warnings.rst
index 68b9ff5ce2f78c..72aa491c2c1b67 100644
--- a/Doc/library/warnings.rst
+++ b/Doc/library/warnings.rst
@@ -80,7 +80,8 @@ The following warnings category classes are currently defined:
 |                                  | unless triggered by code in ``__main__``).    |
 +----------------------------------+-----------------------------------------------+
 | :exc:`SyntaxWarning`             | Base category for warnings about dubious      |
-|                                  | syntactic features.                           |
+|                                  | syntactic features (emitted when compiling    |
+|                                  | Python source code to bytecode).              |
 +----------------------------------+-----------------------------------------------+
 | :exc:`RuntimeWarning`            | Base category for warnings about dubious      |
 |                                  | runtime features.                             |