diff --git a/proctl/proctl_linux_amd64.go b/proctl/proctl_linux_amd64.go
index 68945b09..8b8a5ea6 100644
--- a/proctl/proctl_linux_amd64.go
+++ b/proctl/proctl_linux_amd64.go
@@ -96,9 +96,9 @@ func (dbp *DebuggedProcess) Registers() (*syscall.PtraceRegs, error) {
 // Sets a breakpoint in the running process.
 func (dbp *DebuggedProcess) Break(addr uintptr) (*BreakPoint, error) {
 	var (
-		int3        = []byte{'0', 'x', 'C', 'C'}
+		int3        = []byte{0xCC}
 		f, l, fn    = dbp.GoSymTable.PCToLine(uint64(addr))
-		orginalData = make([]byte, 4)
+		orginalData = make([]byte, 1)
 	)
 
 	_, err := syscall.PtracePeekData(dbp.Pid, addr, orginalData)
diff --git a/proctl/proctl_test.go b/proctl/proctl_test.go
index 1b00c3cb..4d8ef62a 100644
--- a/proctl/proctl_test.go
+++ b/proctl/proctl_test.go
@@ -140,7 +140,7 @@ func TestBreakPoint(t *testing.T) {
 	}
 
 	pc := regs.PC()
-	if pc != sleepyaddr {
+	if pc != sleepyaddr+1 {
 		t.Fatalf("Break not respected:\nPC:%d\nFN:%d\n", pc, sleepyaddr)
 	}