diff --git a/debian/templates/apache-shared.conf b/debian/templates/apache-shared.conf
index e3ad79cc04..b9e3ce9b85 100644
--- a/debian/templates/apache-shared.conf
+++ b/debian/templates/apache-shared.conf
@@ -37,7 +37,7 @@ SetEnv PERL5LIB "/usr/share/koha/lib"
     # Compress content with type html, text, and css, ...
     AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css
     AddOutputFilterByType DEFLATE application/xml application/xhtml+xml application/rss+xml
-    AddOutputFilterByType DEFLATE application/javascript application/x-javascript application/json
+    AddOutputFilterByType DEFLATE application/javascript text/javascript application/x-javascript application/json
 
     DeflateCompressionLevel 9
 
diff --git a/etc/koha-httpd.conf b/etc/koha-httpd.conf
index 49d466a7e2..c61bb87508 100644
--- a/etc/koha-httpd.conf
+++ b/etc/koha-httpd.conf
@@ -50,6 +50,7 @@
      mod_gzip_item_exclude rspheader Content-Type:image/*
      mod_gzip_item_include file \.js$
      mod_gzip_item_include mime ^application/javascript$
+     mod_gzip_item_include mime ^text/javascript$
      mod_gzip_item_include mime ^application/x-javascript$
      mod_gzip_item_include file \.php$
      mod_gzip_item_include mime ^text/html$
@@ -62,7 +63,7 @@
     # Compress content with type html, text, and css, ...
     AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css
     AddOutputFilterByType DEFLATE application/xml application/xhtml+xml application/rss+xml
-    AddOutputFilterByType DEFLATE application/javascript application/x-javascript application/json
+    AddOutputFilterByType DEFLATE application/javascript text/javascript application/x-javascript application/json
 
     DeflateCompressionLevel 9
 
@@ -188,6 +189,7 @@
      mod_gzip_item_exclude rspheader Content-Type:image/*
      mod_gzip_item_include file \.js$
      mod_gzip_item_include mime ^application/javascript$
+     mod_gzip_item_include mime ^text/javascript$
      mod_gzip_item_include mime ^application/x-javascript$
      mod_gzip_item_include file \.php$
      mod_gzip_item_include mime ^text/html$
@@ -200,7 +202,7 @@
      # Compress content with type html, text, and css, ...
      AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css
      AddOutputFilterByType DEFLATE application/xml application/xhtml+xml application/rss+xml
-     AddOutputFilterByType DEFLATE application/javascript application/x-javascript application/json
+     AddOutputFilterByType DEFLATE application/javascript text/javascript application/x-javascript application/json
 
      DeflateCompressionLevel 9