diff --git a/src/common/kernel/item.c b/src/common/kernel/item.c
index 2424589c9..ccf14429b 100644
--- a/src/common/kernel/item.c
+++ b/src/common/kernel/item.c
@@ -1215,6 +1215,10 @@ t_item itemdata[MAXITEMS] = {
 		{"Magischer Kräuterbeutel", "Magische Kräuterbeutel", "", ""}, G_M,
 		IS_MAGIC, 0, 0, {0, 0, 0, 0, 0, 0}, 100, 0, 0, NULL
 	}
+	{			/* I_SPHERE_OF_INVISIBILITY */
+		{"Sphäre der Unsichtbarkeit", "Sphären der Unsichtbarkeit", "", ""}, G_M,
+		IS_MAGIC, 0, 0, {0, 0, 0, 0, 0, 0}, 100, 0, 0, NULL
+	}
 };
 
 const item_t matresource[] = {
diff --git a/src/res/de/strings.xml b/src/res/de/strings.xml
index 7b548c8be..1f7ecfb54 100644
--- a/src/res/de/strings.xml
+++ b/src/res/de/strings.xml
@@ -603,6 +603,14 @@
 	</string>
 
 	<comment>Items</comment>
+	<string name="sphereofinv">
+		<text locale="de">Sphäre der Unsichtbarkeit</text>
+		<text locale="en">sphere of invisibility</text>
+	</string>
+	<string name="sphereofinv_p">
+		<text locale="de">Sphären der Unsichtbarkeit</text>
+		<text locale="en">spheres of invisibility</text>
+	</string>
 	<string name="herb">
 		<text locale="de">Kraut</text>
 	</string>