diff --git a/engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.h b/engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.h
index 3db089bd2ae..cbf2686d812 100644
--- a/engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.h
+++ b/engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.h
@@ -29,7 +29,7 @@
 // byte buffer.
 //
 // AGSCCDynamicObject, extends CCBasicObject: parent for built-in dynamic
-// object managers; provides simplier serialization methods working with
+// object managers; provides simpler serialization methods working with
 // streams instead of a raw memory buffer.
 //
 // AGSCCStaticObject, extends CCBasicObject: a formal stub, intended as
diff --git a/engines/ags/engine/script/script.h b/engines/ags/engine/script/script.h
index 47fb910df85..2e3e773a2ef 100644
--- a/engines/ags/engine/script/script.h
+++ b/engines/ags/engine/script/script.h
@@ -76,11 +76,11 @@ void    run_function_on_non_blocking_thread(NonBlockingScriptFunction *funcToRun
 // Runs the ObjectEvent using an old interaction callback type of 'evnt' index,
 // or alternatively of 'chkAny' index, if previous does not exist;
 // 'isInv' tells if this is a inventory event (it has a slightly different handling for that)
-// Returns 0 normally, or -1 telling of a game state change (eg. a room change occured).
+// Returns 0 normally, or -1 telling of a game state change (eg. a room change occurred).
 int     run_interaction_event(const ObjectEvent &obj_evt, Interaction *nint, int evnt, int chkAny = -1, bool isInv = false);
 // Runs the ObjectEvent using a script callback of 'evnt' index,
 // or alternatively of 'chkAny' index, if previous does not exist
-// Returns 0 normally, or -1 telling of a game state change (eg. a room change occured).
+// Returns 0 normally, or -1 telling of a game state change (eg. a room change occurred).
 int     run_interaction_script(const ObjectEvent &obj_evt, InteractionScripts *nint, int evnt, int chkAny = -1);
 int     run_interaction_commandlist(const ObjectEvent &obj_evt, InteractionCommandList *nicl, int *timesrun, int *cmdsrun);
 void    run_unhandled_event(const ObjectEvent &obj_evt, int evnt);
diff --git a/engines/ags/shared/util/data_stream.h b/engines/ags/shared/util/data_stream.h
index 863e46add71..667707ebecd 100644
--- a/engines/ags/shared/util/data_stream.h
+++ b/engines/ags/shared/util/data_stream.h
@@ -128,7 +128,7 @@ public:
 // StreamSection does NOT own the base stream, and closing
 // a "stream section" does NOT close the base stream.
 // Base stream must stay in memory for as long as there are
-// "stream sections" refering it.
+// "stream sections" referring it.
 class DataStreamSection : public DataStream {
 public:
 	// Constructs a StreamSection over a base stream,
diff --git a/engines/ags/shared/util/string_compat.cpp b/engines/ags/shared/util/string_compat.cpp
index d1a002e3e84..a610317c810 100644
--- a/engines/ags/shared/util/string_compat.cpp
+++ b/engines/ags/shared/util/string_compat.cpp
@@ -73,7 +73,7 @@ int ags_strncpy_s(char *dest, size_t dest_sz, const char *src, size_t count) {
 	for (; *psrc && (psrc != src_end); ++psrc, ++pdst)
 		*pdst = *psrc;
 	*pdst = 0; // ensure null terminator
-	assert((*psrc == 0) || ((psrc - src) == (int)count)); // assert that no *unintended* truncation occured
+	assert((*psrc == 0) || ((psrc - src) == (int)count)); // assert that no *unintended* truncation occurred
 	if ((*psrc != 0) && ((psrc - src) < (int)count))
 		return AL_ERANGE; // not enough dest buffer - error
 	return 0; // success