diff --git a/internal/testchain/transaction.go b/internal/testchain/transaction.go
index b0dcb003d..302cbb694 100644
--- a/internal/testchain/transaction.go
+++ b/internal/testchain/transaction.go
@@ -24,7 +24,7 @@ var (
 	ownerScript = MultisigVerificationScript()
 )
 
-// NewTransferFromOwner returns transaction transfering funds from NEO and GAS owner.
+// NewTransferFromOwner returns transaction transferring funds from NEO and GAS owner.
 func NewTransferFromOwner(bc blockchainer.Blockchainer, contractHash, to util.Uint160, amount int64,
 	nonce, validUntil uint32) (*transaction.Transaction, error) {
 	w := io.NewBufBinWriter()
diff --git a/pkg/compiler/codegen.go b/pkg/compiler/codegen.go
index 5be47dc70..f10e5e440 100644
--- a/pkg/compiler/codegen.go
+++ b/pkg/compiler/codegen.go
@@ -1206,10 +1206,10 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
 
 // processDefers emits code for `defer` statements.
 // TRY-related opcodes handle exception as follows:
-// 1. CATCH block is executed only if exception has occured.
+// 1. CATCH block is executed only if exception has occurred.
 // 2. FINALLY block is always executed, but after catch block.
 // Go `defer` statements are a bit different:
-// 1. `defer` is always executed irregardless of whether an exception has occured.
+// 1. `defer` is always executed irregardless of whether an exception has occurred.
 // 2. `recover` can or can not handle a possible exception.
 // Thus we use the following approach:
 // 1. Throwed exception is saved in a static field X, static fields Y and is set to true.
diff --git a/pkg/compiler/debug.go b/pkg/compiler/debug.go
index 49812c1b8..c21a6b140 100644
--- a/pkg/compiler/debug.go
+++ b/pkg/compiler/debug.go
@@ -22,7 +22,7 @@ type DebugInfo struct {
 	Documents []string          `json:"documents"`
 	Methods   []MethodDebugInfo `json:"methods"`
 	Events    []EventDebugInfo  `json:"events"`
-	// EmittedEvents contains events occuring in code.
+	// EmittedEvents contains events occurring in code.
 	EmittedEvents map[string][][]string `json:"-"`
 }
 
diff --git a/pkg/rpc/server/server.go b/pkg/rpc/server/server.go
index 1c6565b95..3b211f539 100644
--- a/pkg/rpc/server/server.go
+++ b/pkg/rpc/server/server.go
@@ -1174,7 +1174,7 @@ func (s *Server) invokeContractVerify(reqParams request.Params) (interface{}, *r
 // runScriptInVM runs given script in a new test VM and returns the invocation
 // result.
 func (s *Server) runScriptInVM(t trigger.Type, script []byte, tx *transaction.Transaction) (*result.Invoke, *response.Error) {
-	// When transfering funds, script execution does no auto GAS claim,
+	// When transferring funds, script execution does no auto GAS claim,
 	// because it depends on persisting tx height.
 	// This is why we provide block here.
 	b := block.New(s.network, s.stateRootEnabled)