diff --git a/services/spd/opteed/teesmc_opteed.h b/services/spd/opteed/teesmc_opteed.h
index 71b8d71..ec821ba 100644
--- a/services/spd/opteed/teesmc_opteed.h
+++ b/services/spd/opteed/teesmc_opteed.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,13 +10,13 @@
 #define TEESMC_OPTEED_H
 
 /*
- * This file specify SMC function IDs used when returning from TEE to the
+ * This file specifies SMC function IDs used when returning from TEE to the
  * secure monitor.
  *
  * All SMC Function IDs indicates SMC32 Calling Convention but will carry
  * full 64 bit values in the argument registers if invoked from Aarch64
  * mode. This violates the SMC Calling Convention, but since this
- * convention only coveres API towards Normwal World it's something that
+ * convention only coveres API towards Normal World it's something that
  * only concerns the OP-TEE Dispatcher in ARM Trusted Firmware and OP-TEE
  * OS at Secure EL1.
  */
diff --git a/services/spd/tlkd/tlkd_main.c b/services/spd/tlkd/tlkd_main.c
index ffe3319..b1a0477 100644
--- a/services/spd/tlkd/tlkd_main.c
+++ b/services/spd/tlkd/tlkd_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -341,7 +341,7 @@
 
 		/*
 		 * SP has been successfully initialized. Register power
-		 * managemnt hooks with PSCI
+		 * management hooks with PSCI
 		 */
 		psci_register_spd_pm_hook(&tlkd_pm_ops);
 
diff --git a/services/spd/trusty/trusty.c b/services/spd/trusty/trusty.c
index b6ebeeb..c9d73f0 100644
--- a/services/spd/trusty/trusty.c
+++ b/services/spd/trusty/trusty.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -100,7 +100,7 @@
 
 	/*
 	 * To avoid the additional overhead in PSCI flow, skip FP context
-	 * saving/restoring in case of CPU suspend and resume, asssuming that
+	 * saving/restoring in case of CPU suspend and resume, assuming that
 	 * when it's needed the PSCI caller has preserved FP context before
 	 * going here.
 	 */
@@ -302,7 +302,7 @@
 
 	/*
 	 * Adjust secondary cpu entry point for 32 bit images to the
-	 * end of exeption vectors
+	 * end of exception vectors
 	 */
 	if ((cpu != 0) && (reg_width == MODE_RW_32)) {
 		INFO("trusty: cpu %d, adjust entry point to 0x%lx\n",
diff --git a/services/spd/tspd/tspd_main.c b/services/spd/tspd/tspd_main.c
index d2bd43f..f206724 100644
--- a/services/spd/tspd/tspd_main.c
+++ b/services/spd/tspd/tspd_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -375,7 +375,7 @@
 
 			/*
 			 * TSP has been successfully initialized. Register power
-			 * managemnt hooks with PSCI
+			 * management hooks with PSCI
 			 */
 			psci_register_spd_pm_hook(&tspd_pm);