diff --git a/lib/debugfs/debugfs_smc.c b/lib/debugfs/debugfs_smc.c
index 400c166..13ced3d 100644
--- a/lib/debugfs/debugfs_smc.c
+++ b/lib/debugfs/debugfs_smc.c
@@ -54,7 +54,7 @@
 } parms;
 
 /* debugfs_access_lock protects shared buffer and internal */
-/* FS functions from concurrent acccesses.                 */
+/* FS functions from concurrent accesses.                 */
 static spinlock_t debugfs_access_lock;
 
 static bool debugfs_initialized;
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c
index e38b34d..b69c7cc 100644
--- a/lib/el3_runtime/aarch64/context_mgmt.c
+++ b/lib/el3_runtime/aarch64/context_mgmt.c
@@ -457,7 +457,7 @@
 void __init cm_init(void)
 {
 	/*
-	 * The context management library has only global data to intialize, but
+	 * The context management library has only global data to initialize, but
 	 * that will be done when the BSS is zeroed out.
 	 */
 }
diff --git a/lib/optee/optee_utils.c b/lib/optee/optee_utils.c
index 25272fc..6641db9 100644
--- a/lib/optee/optee_utils.c
+++ b/lib/optee/optee_utils.c
@@ -180,7 +180,7 @@
 
 	/*
 	 * Update "pc" value which should comes from pager image. After the
-	 * header image is parsed, it will be unuseful, and the actual
+	 * header image is parsed, it will be useless, and the actual
 	 * execution image after BL31 is pager image.
 	 */
 	header_ep->pc =	pager_image_info->image_base;
diff --git a/lib/xlat_tables/aarch32/nonlpae_tables.c b/lib/xlat_tables/aarch32/nonlpae_tables.c
index 5646f34..f582404 100644
--- a/lib/xlat_tables/aarch32/nonlpae_tables.c
+++ b/lib/xlat_tables/aarch32/nonlpae_tables.c
@@ -272,7 +272,7 @@
 	/* Make room for new region by moving other regions up by one place */
 	(void)memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
 
-	/* Check we haven't lost the empty sentinal from the end of the array */
+	/* Check we haven't lost the empty sentinel from the end of the array */
 	assert(mm_last->size == 0U);
 
 	mm->base_pa = base_pa;
diff --git a/lib/xlat_tables/xlat_tables_common.c b/lib/xlat_tables/xlat_tables_common.c
index 71273cb..e2c8370 100644
--- a/lib/xlat_tables/xlat_tables_common.c
+++ b/lib/xlat_tables/xlat_tables_common.c
@@ -161,7 +161,7 @@
 	/* Make room for new region by moving other regions up by one place */
 	(void)memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
 
-	/* Check we haven't lost the empty sentinal from the end of the array */
+	/* Check we haven't lost the empty sentinel from the end of the array */
 	assert(mm_last->size == 0U);
 
 	mm->base_pa = base_pa;
diff --git a/lib/xlat_tables_v2/xlat_tables_core.c b/lib/xlat_tables_v2/xlat_tables_core.c
index de57184..3a9c058 100644
--- a/lib/xlat_tables_v2/xlat_tables_core.c
+++ b/lib/xlat_tables_v2/xlat_tables_core.c
@@ -988,7 +988,7 @@
 		     (uintptr_t)mm_last - (uintptr_t)mm_cursor);
 
 	/*
-	 * Check we haven't lost the empty sentinal from the end of the array.
+	 * Check we haven't lost the empty sentinel from the end of the array.
 	 * This shouldn't happen as we have checked in mmap_add_region_check
 	 * that there is free space.
 	 */
diff --git a/lib/xlat_tables_v2/xlat_tables_utils.c b/lib/xlat_tables_v2/xlat_tables_utils.c
index 38a375e..f3a53cc 100644
--- a/lib/xlat_tables_v2/xlat_tables_utils.c
+++ b/lib/xlat_tables_v2/xlat_tables_utils.c
@@ -585,7 +585,7 @@
 		base_va += PAGE_SIZE;
 	}
 
-	/* Ensure that the last descriptor writen is seen by the system. */
+	/* Ensure that the last descriptor written is seen by the system. */
 	dsbish();
 
 	return 0;