diff --git a/compiler/natives/src/os/file.go b/compiler/natives/src/os/file.go
index 37d4275f3..a3683b8b0 100644
--- a/compiler/natives/src/os/file.go
+++ b/compiler/natives/src/os/file.go
@@ -3,7 +3,7 @@
 
 package os
 
-// WriteString copied from Go 1.16, before it was made more peformant, and unsafe.
+// WriteString copied from Go 1.16, before it was made more performant, and unsafe.
 func (f *File) WriteString(s string) (n int, err error) {
 	return f.Write([]byte(s))
 }
diff --git a/compiler/natives/src/runtime/runtime.go b/compiler/natives/src/runtime/runtime.go
index 41c60876c..9f8425af8 100644
--- a/compiler/natives/src/runtime/runtime.go
+++ b/compiler/natives/src/runtime/runtime.go
@@ -468,7 +468,7 @@ func StartTrace() error { return nil }
 func StopTrace()        {}
 func ReadTrace() []byte
 
-// We fake a cgo environment to catch errors. Therefor we have to implement this and always return 0
+// We fake a cgo environment to catch errors. Therefore we have to implement this and always return 0
 func NumCgoCall() int64 {
 	return 0
 }
diff --git a/compiler/prelude/types.js b/compiler/prelude/types.js
index 61475454e..9570b2fed 100644
--- a/compiler/prelude/types.js
+++ b/compiler/prelude/types.js
@@ -59,7 +59,7 @@ var $idKey = x => {
 };
 
 // Creates constructor functions for array pointer types. Returns a new function
-// instace each time to make sure each type is independent of the other.
+// instance each time to make sure each type is independent of the other.
 var $arrayPtrCtor = () => {
     return function (array) {
         this.$get = () => { return array; };
diff --git a/tests/map_js_test.go b/tests/map_js_test.go
index 64cc8e6f0..c815661ab 100644
--- a/tests/map_js_test.go
+++ b/tests/map_js_test.go
@@ -69,7 +69,7 @@ func Test_MapStructObjectWrapper(t *testing.T) {
 
 	stringMap := map[string]string{"key": "value"}
 
-	// You cannot wrap a map directly, so put it in a stuct.
+	// You cannot wrap a map directly, so put it in a struct.
 	type StructWithMap struct {
 		Map map[string]string
 	}
diff --git a/tests/misc_test.go b/tests/misc_test.go
index a38d91c81..8dc3be924 100644
--- a/tests/misc_test.go
+++ b/tests/misc_test.go
@@ -900,7 +900,7 @@ func TestReflectSetForEmbed(t *testing.T) {
 	f0 := e.Field(0)
 	e.Set(in)
 	if e.Field(0) != f0 {
-		t.Fatalf("relfect.Set got %v, want %v", f0, e.Field(0))
+		t.Fatalf("reflect.Set got %v, want %v", f0, e.Field(0))
 	}
 }