diff --git a/theme/UPGRADE.txt b/theme/UPGRADE.txt
index d58cc11e9b5..a9d336d93a2 100644
--- a/theme/UPGRADE.txt
+++ b/theme/UPGRADE.txt
@@ -166,3 +166,8 @@ a.autolink:hover {}
 /* Just a small table cell dividing others in a list */
 .tabledivider {}
 
+
+/* Style for the text/links inside the heading block when there is a
+  subscribe link there, eg front page news, social forum  */
+
+.headingblockcontent {}
diff --git a/theme/standard/styles.php b/theme/standard/styles.php
index 797aaf298e1..5603fd83a9e 100644
--- a/theme/standard/styles.php
+++ b/theme/standard/styles.php
@@ -456,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}
diff --git a/theme/standardblue/styles.php b/theme/standardblue/styles.php
index 8c0853e44f7..5603fd83a9e 100644
--- a/theme/standardblue/styles.php
+++ b/theme/standardblue/styles.php
@@ -2,6 +2,10 @@
 
 /// We use PHP so we can do value substitutions into the styles
 
+    if (!isset($themename)) {
+        $themename = NULL;
+    }
+
     $nomoodlecookie = true;
     require_once("../../config.php"); 
     $themeurl = style_sheet_setup(filemtime("styles.php"), 300, $themename);
@@ -452,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}
diff --git a/theme/standardgreen/styles.php b/theme/standardgreen/styles.php
index 8c0853e44f7..5603fd83a9e 100644
--- a/theme/standardgreen/styles.php
+++ b/theme/standardgreen/styles.php
@@ -2,6 +2,10 @@
 
 /// We use PHP so we can do value substitutions into the styles
 
+    if (!isset($themename)) {
+        $themename = NULL;
+    }
+
     $nomoodlecookie = true;
     require_once("../../config.php"); 
     $themeurl = style_sheet_setup(filemtime("styles.php"), 300, $themename);
@@ -452,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}
diff --git a/theme/standardlogo/styles.php b/theme/standardlogo/styles.php
index 8c0853e44f7..5603fd83a9e 100644
--- a/theme/standardlogo/styles.php
+++ b/theme/standardlogo/styles.php
@@ -2,6 +2,10 @@
 
 /// We use PHP so we can do value substitutions into the styles
 
+    if (!isset($themename)) {
+        $themename = NULL;
+    }
+
     $nomoodlecookie = true;
     require_once("../../config.php"); 
     $themeurl = style_sheet_setup(filemtime("styles.php"), 300, $themename);
@@ -452,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}
diff --git a/theme/standardred/styles.php b/theme/standardred/styles.php
index 8c0853e44f7..5603fd83a9e 100644
--- a/theme/standardred/styles.php
+++ b/theme/standardred/styles.php
@@ -2,6 +2,10 @@
 
 /// We use PHP so we can do value substitutions into the styles
 
+    if (!isset($themename)) {
+        $themename = NULL;
+    }
+
     $nomoodlecookie = true;
     require_once("../../config.php"); 
     $themeurl = style_sheet_setup(filemtime("styles.php"), 300, $themename);
@@ -452,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}
diff --git a/theme/standardwhite/styles.php b/theme/standardwhite/styles.php
index 8c0853e44f7..5603fd83a9e 100644
--- a/theme/standardwhite/styles.php
+++ b/theme/standardwhite/styles.php
@@ -2,6 +2,10 @@
 
 /// We use PHP so we can do value substitutions into the styles
 
+    if (!isset($themename)) {
+        $themename = NULL;
+    }
+
     $nomoodlecookie = true;
     require_once("../../config.php"); 
     $themeurl = style_sheet_setup(filemtime("styles.php"), 300, $themename);
@@ -452,3 +456,5 @@ a.autolink:hover {
     border-top: 0px;
 }
 
+.headingblockcontent {
+}