diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
index cb9f66b7d4..8140a075a2 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
@@ -601,8 +601,8 @@ const u8* Jit64::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
 				MOV(32, M(&PC), Imm32(ops[i].address));
 				ABI_CallFunction(reinterpret_cast<void *>(&PowerPC::CheckBreakPoints));
 				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(0xFFFFFFFF));
-
 				FixupBranch noBreakpoint = J_CC(CC_Z);
+
 				gpr.Flush(FLUSH_ALL);
 				fpr.Flush(FLUSH_ALL);
 
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp b/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
index b9aaa2df6a..04462872e6 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
@@ -81,12 +81,15 @@ void Jit64AsmRoutineManager::Generate()
 
 			if (Core::g_CoreStartupParameter.bEnableDebugging)
 			{
+				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(PowerPC::CPU_STEPPING));
+				FixupBranch notStepping = J_CC(CC_Z);
 				ABI_CallFunction(reinterpret_cast<void *>(&PowerPC::CheckBreakPoints));
 				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(0xFFFFFFFF));
 				FixupBranch noBreakpoint = J_CC(CC_Z);
 				ABI_PopAllCalleeSavedRegsAndAdjustStack();
 				RET();
 				SetJumpTarget(noBreakpoint);
+				SetJumpTarget(notStepping);
 			}
 
 			SetJumpTarget(skipToRealDispatch);
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
index 4980b4d7a4..5aaf4b99f1 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
@@ -266,7 +266,7 @@ void Jit64::reg_imm(UGeckoInstruction inst)
 	case 15:
 		if (a == 0) {	// lis
 			// Merge with next instruction if loading a 32-bits immediate value (lis + addi, lis + ori)
-			if (!js.isLastInstruction) {
+			if (!js.isLastInstruction && !Core::g_CoreStartupParameter.bEnableDebugging) {
 				if ((js.next_inst.OPCD == 14) && (js.next_inst.RD == d) && (js.next_inst.RA == d)) {      // addi
 					gpr.SetImmediate32(d, ((u32)inst.SIMM_16 << 16) + (u32)(s32)js.next_inst.SIMM_16);
 					js.downcountAmount++;
diff --git a/Source/Core/Core/Src/PowerPC/Jit64IL/JitILAsm.cpp b/Source/Core/Core/Src/PowerPC/Jit64IL/JitILAsm.cpp
index da94c881e3..ac533dd473 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64IL/JitILAsm.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64IL/JitILAsm.cpp
@@ -83,12 +83,15 @@ void JitILAsmRoutineManager::Generate()
 
 			if (Core::g_CoreStartupParameter.bEnableDebugging)
 			{
+				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(PowerPC::CPU_STEPPING));
+				FixupBranch notStepping = J_CC(CC_Z);
 				ABI_CallFunction(reinterpret_cast<void *>(&PowerPC::CheckBreakPoints));
 				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(0xFFFFFFFF));
 				FixupBranch noBreakpoint = J_CC(CC_Z);
 				ABI_PopAllCalleeSavedRegsAndAdjustStack();
 				RET();
 				SetJumpTarget(noBreakpoint);
+				SetJumpTarget(notStepping);
 			}
 
 			SetJumpTarget(skipToRealDispatch);
diff --git a/Source/Core/Core/Src/PowerPC/JitCommon/JitCache.cpp b/Source/Core/Core/Src/PowerPC/JitCommon/JitCache.cpp
index 46096450e7..8cc85e3284 100644
--- a/Source/Core/Core/Src/PowerPC/JitCommon/JitCache.cpp
+++ b/Source/Core/Core/Src/PowerPC/JitCommon/JitCache.cpp
@@ -422,17 +422,17 @@ bool JitBlock::ContainsAddress(u32 em_address)
 			if (b.originalAddress & JIT_ICACHE_VMEM_BIT)
 			{
 				u32 cacheaddr = b.originalAddress & JIT_ICACHE_MASK;
-				memset(iCacheVMEM + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+				memset(iCacheVMEM + cacheaddr, JIT_ICACHE_INVALID_BYTE, 4);
 			}
 			else if (b.originalAddress & JIT_ICACHE_EXRAM_BIT)
 			{
 				u32 cacheaddr = b.originalAddress & JIT_ICACHEEX_MASK;
-				memset(iCacheEx + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+				memset(iCacheEx + cacheaddr, JIT_ICACHE_INVALID_BYTE, 4);
 			}
 			else
 			{
 				u32 cacheaddr = b.originalAddress & JIT_ICACHE_MASK;
-				memset(iCache + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+				memset(iCache + cacheaddr, JIT_ICACHE_INVALID_BYTE, 4);
 			}
 #endif
 			DestroyBlock(it2->second, true);
diff --git a/Source/Core/DolphinWX/Src/Debugger/CodeWindow.cpp b/Source/Core/DolphinWX/Src/Debugger/CodeWindow.cpp
index 37ff81772a..0b6b366c88 100644
--- a/Source/Core/DolphinWX/Src/Debugger/CodeWindow.cpp
+++ b/Source/Core/DolphinWX/Src/Debugger/CodeWindow.cpp
@@ -263,6 +263,8 @@ void CCodeWindow::SingleStep()
 {
 	if (CCPU::IsStepping())
 	{
+		if (jit)
+			jit->GetBlockCache()->InvalidateICache(PC, 4);
 		CCPU::StepOpcode(&sync_event);
 		wxThread::Sleep(20);
 		// need a short wait here