diff --git a/config/apache/standardebooks.org.conf b/config/apache/standardebooks.org.conf
index 67c9897c..8ecee0b1 100644
--- a/config/apache/standardebooks.org.conf
+++ b/config/apache/standardebooks.org.conf
@@ -8,9 +8,10 @@ ServerSignature		off
 AddDefaultCharset	utf-8
 UseCanonicalName	on
 LogLevel		warn
-AddOutputFilterByType	deflate	image/svg+xml
 AddType			image/avif .avif
 AddType			font/woff2 .woff2
+AddOutputFilterByType	deflate	image/svg+xml
+AddOutputFilterByType	deflate	application/xhtml+xml
 TraceEnable		off
 Protocols		h2 h2c http/1.1
 
diff --git a/config/apache/standardebooks.test.conf b/config/apache/standardebooks.test.conf
index d485c414..f41443ea 100644
--- a/config/apache/standardebooks.test.conf
+++ b/config/apache/standardebooks.test.conf
@@ -8,9 +8,10 @@ ServerSignature		off
 AddDefaultCharset	utf-8
 UseCanonicalName	on
 LogLevel		warn
-AddOutputFilterByType	deflate	image/svg+xml
 AddType			image/avif .avif
 AddType			font/woff2 .woff2
+AddOutputFilterByType	deflate	image/svg+xml
+AddOutputFilterByType	deflate	application/xhtml+xml
 TraceEnable		off
 Protocols		h2 h2c http/1.1