diff --git a/gst/dtmf/gstdtmfcommon.h b/gst/dtmf/gstdtmfcommon.h
index aff881b987..82617d72fd 100644
--- a/gst/dtmf/gstdtmfcommon.h
+++ b/gst/dtmf/gstdtmfcommon.h
@@ -9,9 +9,9 @@
 #define MAX_VOLUME               36
 
 #define MIN_EVENT                0
-#define MAX_EVENT                16
+#define MAX_EVENT                15
 #define MIN_EVENT_STRING         "0"
-#define MAX_EVENT_STRING         "16"
+#define MAX_EVENT_STRING         "15"
 
 #ifndef M_PI
 #define M_PI           3.14159265358979323846  /* pi */
diff --git a/gst/dtmf/gstdtmfsrc.c b/gst/dtmf/gstdtmfsrc.c
index eb55268d70..a812e98ef0 100644
--- a/gst/dtmf/gstdtmfsrc.c
+++ b/gst/dtmf/gstdtmfsrc.c
@@ -65,7 +65,7 @@
  * <row>
  * <entry>number</entry>
  * <entry>G_TYPE_INT</entry>
- * <entry>0-16</entry>
+ * <entry>0-15</entry>
  * <entry>The event number.</entry>
  * </row>
  * <row>
diff --git a/gst/dtmf/gstrtpdtmfsrc.c b/gst/dtmf/gstrtpdtmfsrc.c
index 89e8c00270..875a020661 100644
--- a/gst/dtmf/gstrtpdtmfsrc.c
+++ b/gst/dtmf/gstrtpdtmfsrc.c
@@ -63,7 +63,7 @@
  * <row>
  * <entry>number</entry>
  * <entry>G_TYPE_INT</entry>
- * <entry>0-16</entry>
+ * <entry>0-15</entry>
  * <entry>The event number.</entry>
  * </row>
  * <row>