diff --git a/htdocs/theme/auguria/ckeditor/config.js b/htdocs/theme/auguria/ckeditor/config.js
index 96b73b0c2ba..ad6868029ee 100644
--- a/htdocs/theme/auguria/ckeditor/config.js
+++ b/htdocs/theme/auguria/ckeditor/config.js
@@ -24,7 +24,7 @@ CKEDITOR.editorConfig = function( config )
 	config.fullPage = false;	// Not a full html page string, just part of it
 	config.dialog_backgroundCoverColor = 'rgb(255, 254, 253)';
 	//config.contentsCss = '/css/mysitestyles.css';
-	config.image_previewText='';
+	config.image_previewText=' ';
 
 	config.toolbar_Full =
 	[
diff --git a/htdocs/theme/bureau2crea/ckeditor/config.js b/htdocs/theme/bureau2crea/ckeditor/config.js
index 96b73b0c2ba..ad6868029ee 100644
--- a/htdocs/theme/bureau2crea/ckeditor/config.js
+++ b/htdocs/theme/bureau2crea/ckeditor/config.js
@@ -24,7 +24,7 @@ CKEDITOR.editorConfig = function( config )
 	config.fullPage = false;	// Not a full html page string, just part of it
 	config.dialog_backgroundCoverColor = 'rgb(255, 254, 253)';
 	//config.contentsCss = '/css/mysitestyles.css';
-	config.image_previewText='';
+	config.image_previewText=' ';
 
 	config.toolbar_Full =
 	[
diff --git a/htdocs/theme/eldy/ckeditor/config.js b/htdocs/theme/eldy/ckeditor/config.js
index 96b73b0c2ba..2d41b7a7d06 100644
--- a/htdocs/theme/eldy/ckeditor/config.js
+++ b/htdocs/theme/eldy/ckeditor/config.js
@@ -24,7 +24,7 @@ CKEDITOR.editorConfig = function( config )
 	config.fullPage = false;	// Not a full html page string, just part of it
 	config.dialog_backgroundCoverColor = 'rgb(255, 254, 253)';
 	//config.contentsCss = '/css/mysitestyles.css';
-	config.image_previewText='';
+	config.image_previewText=' ';	// Must no be empty
 
 	config.toolbar_Full =
 	[
diff --git a/htdocs/theme/freelug/ckeditor/config.js b/htdocs/theme/freelug/ckeditor/config.js
index 96b73b0c2ba..ad6868029ee 100644
--- a/htdocs/theme/freelug/ckeditor/config.js
+++ b/htdocs/theme/freelug/ckeditor/config.js
@@ -24,7 +24,7 @@ CKEDITOR.editorConfig = function( config )
 	config.fullPage = false;	// Not a full html page string, just part of it
 	config.dialog_backgroundCoverColor = 'rgb(255, 254, 253)';
 	//config.contentsCss = '/css/mysitestyles.css';
-	config.image_previewText='';
+	config.image_previewText=' ';
 
 	config.toolbar_Full =
 	[
diff --git a/htdocs/theme/yellow/ckeditor/config.js b/htdocs/theme/yellow/ckeditor/config.js
index 96b73b0c2ba..ad6868029ee 100644
--- a/htdocs/theme/yellow/ckeditor/config.js
+++ b/htdocs/theme/yellow/ckeditor/config.js
@@ -24,7 +24,7 @@ CKEDITOR.editorConfig = function( config )
 	config.fullPage = false;	// Not a full html page string, just part of it
 	config.dialog_backgroundCoverColor = 'rgb(255, 254, 253)';
 	//config.contentsCss = '/css/mysitestyles.css';
-	config.image_previewText='';
+	config.image_previewText=' ';
 
 	config.toolbar_Full =
 	[