diff --git a/libs/freetdm/src/include/freetdm.h b/libs/freetdm/src/include/freetdm.h
index b792ed4ede..1a764b5489 100755
--- a/libs/freetdm/src/include/freetdm.h
+++ b/libs/freetdm/src/include/freetdm.h
@@ -48,7 +48,7 @@
 #define FTDM_MAX_CHANNELS_PHYSICAL_SPAN 32
 
 /*! \brief Max number of physical spans per logical span */
-#define FTDM_MAX_PHYSICAL_SPANS_PER_LOGICAL_SPAN 32
+#define FTDM_MAX_PHYSICAL_SPANS_PER_LOGICAL_SPAN 128
 
 /*! \brief Max number of channels a logical span can contain */
 #define FTDM_MAX_CHANNELS_SPAN FTDM_MAX_CHANNELS_PHYSICAL_SPAN * FTDM_MAX_PHYSICAL_SPANS_PER_LOGICAL_SPAN