diff --git a/swad_changelog.h b/swad_changelog.h
index 066eefbde..f24fe476e 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -128,13 +128,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 15.225.20 (2016-06-17)"
+#define Log_PLATFORM_VERSION	"SWAD 15.225.21 (2016-06-17)"
 #define CSS_FILE		"swad15.225.11.css"
 #define JS_FILE			"swad15.216.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*.h sql/swad*.sql | tail -1
 /*
+        Version 15.225.21:Jun 17, 2016	Fixed bug in photo zoom, reported by Javier Fernández Baldomero. (202894 lines)
         Version 15.225.20:Jun 17, 2016	Show details of user's profile in similar users. (202893 lines)
         Version 15.225.19:Jun 17, 2016	Changed layout of listing of similar users. (202927 lines)
         Version 15.225.18:Jun 17, 2016	Show number of files of a user in similar users. (202904 lines)
diff --git a/swad_photo.c b/swad_photo.c
index 7fcb6c021..3db7e2458 100644
--- a/swad_photo.c
+++ b/swad_photo.c
@@ -1186,7 +1186,7 @@ void Pho_ShowUsrPhoto (const struct UsrData *UsrDat,const char *PhotoURL,
       Str_ReplaceSpecialCharByCodes (SpecialSurnames,2*Usr_MAX_BYTES_NAME_SPEC_CHAR+1);
       strcat (SpecialShortName,"<br />");
       strcat (SpecialShortName,SpecialSurnames);
-      fprintf (Gbl.F.Out," onmouseover=\"zoom(this,'%s','%s')\" onmouseout=\"noZoom();\"",
+      fprintf (Gbl.F.Out," onmouseover=\"zoom(this,'%s',&quot;%s&quot;);\" onmouseout=\"noZoom();\"",
                PhotoURL,SpecialShortName);
      }
 
@@ -2394,7 +2394,7 @@ static void Pho_ShowDegreeAvgPhotoAndStat (struct Degree *Deg,
                      NumStdsWithPhoto,Txt_photos,
                      NumStds > 0 ? (int) (((NumStdsWithPhoto * 100.0) / NumStds) + 0.5) :
                 	           0);
-            fprintf (Gbl.F.Out," onmouseover=\"zoom(this,'%s','%s')\" onmouseout=\"noZoom();\"",
+            fprintf (Gbl.F.Out," onmouseover=\"zoom(this,'%s',&quot;%s&quot;);\" onmouseout=\"noZoom();\"",
                      PhotoURL,PhotoCaption);
            }
         }