diff --git a/inc/ext/prof_protocol.h b/inc/ext/prof_protocol.h
index 14bc81cb23..d59343d623 100644
--- a/inc/ext/prof_protocol.h
+++ b/inc/ext/prof_protocol.h
@@ -26,8 +26,8 @@ THE SOFTWARE.
 // Traced API domains
 typedef enum {
   ACTIVITY_DOMAIN_HSA_API = 0,                    // HSA domain
-  ACTIVITY_DOMAIN_HSA_OPS = 1,                    // HSA AYNC domain
-  ACTIVITY_DOMAIN_HCC_OPS = 2,                    // HCC domain
+  ACTIVITY_DOMAIN_HSA_OPS = 1,                    // HSA async activity domain
+  ACTIVITY_DOMAIN_HCC_OPS = 2,                    // HCC async activity domain
   ACTIVITY_DOMAIN_HIP_API = 3,                    // HIP domain
   ACTIVITY_DOMAIN_NUMBER = 4
 } activity_domain_t;
diff --git a/inc/roctracer.h b/inc/roctracer.h
index b8d4f346e4..f39118abdf 100644
--- a/inc/roctracer.h
+++ b/inc/roctracer.h
@@ -76,7 +76,7 @@ const char* roctracer_error_string();
 // Activity domain type
 typedef activity_domain_t roctracer_domain_t;
 
-// Return Op string by given domain and Op codes
+// Return Op string by given domain and Op code
 // NULL returned on the error and the library errno is set
 const char* roctracer_op_string(
   uint32_t domain,                                        // tracing domain