diff --git a/src/reefnet_sensus.c b/src/reefnet_sensus.c
index 5557280..39a0497 100644
--- a/src/reefnet_sensus.c
+++ b/src/reefnet_sensus.c
@@ -376,8 +376,6 @@ reefnet_sensus_device_dump (device_t *abstract, unsigned char *data, unsigned in
 static device_status_t
 reefnet_sensus_device_foreach (device_t *abstract, dive_callback_t callback, void *userdata)
 {
-	reefnet_sensus_device_t *device = (reefnet_sensus_device_t*) abstract;
-
 	if (! device_is_reefnet_sensus (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;
 
diff --git a/src/reefnet_sensuspro.c b/src/reefnet_sensuspro.c
index 08d66c5..9920b37 100644
--- a/src/reefnet_sensuspro.c
+++ b/src/reefnet_sensuspro.c
@@ -341,8 +341,6 @@ reefnet_sensuspro_device_dump (device_t *abstract, unsigned char *data, unsigned
 static device_status_t
 reefnet_sensuspro_device_foreach (device_t *abstract, dive_callback_t callback, void *userdata)
 {
-	reefnet_sensuspro_device_t *device = (reefnet_sensuspro_device_t*) abstract;
-
 	if (! device_is_reefnet_sensuspro (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;
 
diff --git a/src/suunto_solution.c b/src/suunto_solution.c
index 148e660..a648e8f 100644
--- a/src/suunto_solution.c
+++ b/src/suunto_solution.c
@@ -275,8 +275,6 @@ suunto_solution_device_foreach (device_t *abstract, dive_callback_t callback, vo
 device_status_t
 suunto_solution_extract_dives (device_t *abstract, const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
 {
-	suunto_solution_device_t *device = (suunto_solution_device_t*) abstract;
-
 	if (abstract && !device_is_suunto_solution (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;
 
diff --git a/src/uwatec_aladin.c b/src/uwatec_aladin.c
index 569dcf6..45d182e 100644
--- a/src/uwatec_aladin.c
+++ b/src/uwatec_aladin.c
@@ -275,8 +275,6 @@ uwatec_aladin_device_dump (device_t *abstract, unsigned char data[], unsigned in
 static device_status_t
 uwatec_aladin_device_foreach (device_t *abstract, dive_callback_t callback, void *userdata)
 {
-	uwatec_aladin_device_t *device = (uwatec_aladin_device_t*) abstract;
-
 	if (! device_is_uwatec_aladin (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;
 
diff --git a/src/uwatec_memomouse.c b/src/uwatec_memomouse.c
index 0f2e2f2..e76411f 100644
--- a/src/uwatec_memomouse.c
+++ b/src/uwatec_memomouse.c
@@ -570,8 +570,6 @@ uwatec_memomouse_device_foreach (device_t *abstract, dive_callback_t callback, v
 device_status_t
 uwatec_memomouse_extract_dives (device_t *abstract, const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
 {
-	uwatec_memomouse_device_t *device = (uwatec_memomouse_device_t*) abstract;
-
 	if (abstract && !device_is_uwatec_memomouse (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;
 
diff --git a/src/uwatec_smart.c b/src/uwatec_smart.c
index b767f45..8256725 100644
--- a/src/uwatec_smart.c
+++ b/src/uwatec_smart.c
@@ -550,8 +550,6 @@ uwatec_smart_device_foreach (device_t *abstract, dive_callback_t callback, void
 device_status_t
 uwatec_smart_extract_dives (device_t *abstract, const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
 {
-	uwatec_smart_device_t *device = (uwatec_smart_device_t*) abstract;
-
 	if (abstract && !device_is_uwatec_smart (abstract))
 		return DEVICE_STATUS_TYPE_MISMATCH;