diff --git a/drivers/isimodem/cbs.c b/drivers/isimodem/cbs.c
index f43d60e9..60cb7a75 100644
--- a/drivers/isimodem/cbs.c
+++ b/drivers/isimodem/cbs.c
@@ -82,7 +82,7 @@ static bool routing_resp_cb(GIsiClient *client, const void *restrict data,
 
 	DBG("");
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}
diff --git a/drivers/isimodem/devinfo.c b/drivers/isimodem/devinfo.c
index 03ece9fd..c05ab3c0 100644
--- a/drivers/isimodem/devinfo.c
+++ b/drivers/isimodem/devinfo.c
@@ -58,7 +58,7 @@ static bool info_resp_cb(GIsiClient *client, const void *restrict data,
 	char *info = NULL;
 	guint8 chars;
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}
diff --git a/drivers/isimodem/network-registration.c b/drivers/isimodem/network-registration.c
index 6feff545..810a5a8e 100644
--- a/drivers/isimodem/network-registration.c
+++ b/drivers/isimodem/network-registration.c
@@ -387,7 +387,7 @@ static bool available_resp_cb(GIsiClient *client, const void *restrict data,
 	int common = 0;
 	int detail = 0;
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}
@@ -505,7 +505,7 @@ static bool set_auto_resp_cb(GIsiClient *client, const void *restrict data,
 	struct netreg_data *net = cbd->user;
 	ofono_netreg_register_cb_t cb = cbd->cb;
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}
@@ -694,8 +694,8 @@ static bool rat_resp_cb(GIsiClient *client, const void *restrict data,
 	struct netreg_data *nd = ofono_netreg_get_data(netreg);
 
 	GIsiSubBlockIter iter;
-	
-	if(!msg) {
+
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		return true;
 	}
@@ -760,7 +760,7 @@ static bool rssi_resp_cb(GIsiClient *client, const void *restrict data,
 	GIsiSubBlockIter iter;
 	int strength = -1;
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}
diff --git a/drivers/isimodem/sim.c b/drivers/isimodem/sim.c
index cebe8f25..a3b35b29 100644
--- a/drivers/isimodem/sim.c
+++ b/drivers/isimodem/sim.c
@@ -208,7 +208,7 @@ static bool imsi_resp_cb(GIsiClient *client, const void *restrict data,
 	size_t j = 0;
 	size_t octets = 0;
 
-	if(!msg) {
+	if (!msg) {
 		DBG("ISI client error: %d", g_isi_client_error(client));
 		goto error;
 	}