diff --git a/swad_ID.c b/swad_ID.c
index 2cbdec7e6..b36c3a308 100644
--- a/swad_ID.c
+++ b/swad_ID.c
@@ -498,7 +498,7 @@ static void ID_PutLinkToConfirmID (struct UsrData *UsrDat,unsigned NumID,
 	    UsrDat->IDs.List[NumID].ID);
 
    /***** Put link *****/
-   Ico_PutIconLink ("ok_on16x16.gif",Txt_Confirm_ID,Txt_Confirm_ID,
+   Ico_PutIconLink ("check.svg",Txt_Confirm_ID,Txt_Confirm_ID,
                     The_ClassFormBold[Gbl.Prefs.Theme],NULL);
 
    /***** End form *****/
diff --git a/swad_changelog.h b/swad_changelog.h
index 7b922f4b3..1ec92506d 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -369,10 +369,11 @@ En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
 
-#define Log_PLATFORM_VERSION	"SWAD 18.31.1 (2019-01-11)"
+#define Log_PLATFORM_VERSION	"SWAD 18.31.2 (2019-01-11)"
 #define CSS_FILE		"swad18.31.css"
 #define JS_FILE			"swad17.17.1.js"
 /*
+	Version 18.31.2:  Jan 11, 2019 	Changes in test import. (239527 lines)
 	Version 18.31.1:  Jan 11, 2019 	Changes in lists of degrees and courses. (239526 lines)
 	Version 18.31:    Jan 11, 2019 	Some new SVG icons.
 				        Fixed bug in messages. (239545 lines)
diff --git a/swad_test_import.c b/swad_test_import.c
index 8998d380b..d450fbefb 100644
--- a/swad_test_import.c
+++ b/swad_test_import.c
@@ -1089,14 +1089,14 @@ static void TsI_WriteRowImportedQst (struct XMLElement *StemElem,
        Gbl.Test.AnswerType == Tst_ANS_MULTIPLE_CHOICE)
       /* Put an icon that indicates whether shuffle is enabled or not */
       if (Gbl.Test.Shuffle)
-         fprintf (Gbl.F.Out,"<img src=\"%s/%s16x16.gif\""
+         fprintf (Gbl.F.Out,"<img src=\"%s/check.svg\""
                             " alt=\"%s\" title=\"%s\""
-                            " class=\"ICO20x20\" />",
+                            " class=\"%sICO16x16\" />",
                   Gbl.Prefs.URLIcons,
-                  QuestionExists ? "ok_off" :
-                	           "ok_on",
                   Txt_TST_Answer_given_by_the_teachers,
-                  Txt_TST_Answer_given_by_the_teachers);
+                  Txt_TST_Answer_given_by_the_teachers,
+                  QuestionExists ? "ICO_HIDDEN " :
+                	           "");
    fprintf (Gbl.F.Out,"</td>");
 
    /***** Write the stem and the answers *****/