diff --git a/core/debuggercontroller.cpp b/core/debuggercontroller.cpp
index 07d1491..3ce4e0f 100644
--- a/core/debuggercontroller.cpp
+++ b/core/debuggercontroller.cpp
@@ -370,7 +370,10 @@ DebugStopReason DebuggerController::StepIntoIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				LowLevelILFunctionRef llil = func->GetLowLevelIL();
+				LowLevelILFunctionRef llil = func->GetLowLevelILIfAvailable();
+				if (!llil)
+					return SingleStep;
+
 				size_t start = llil->GetInstructionStart(m_liveView->GetDefaultArchitecture(), newRemoteRip);
 				if (start < llil->GetInstructionCount())
 				{
@@ -397,7 +400,10 @@ DebugStopReason DebuggerController::StepIntoIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				MediumLevelILFunctionRef mlil = func->GetMediumLevelIL();
+				MediumLevelILFunctionRef mlil = func->GetMediumLevelILIfAvailable();
+				if (!mlil)
+					return SingleStep;
+
 				size_t start = mlil->GetInstructionStart(m_liveView->GetDefaultArchitecture(), newRemoteRip);
 				if (start < mlil->GetInstructionCount())
 				{
@@ -425,7 +431,10 @@ DebugStopReason DebuggerController::StepIntoIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				HighLevelILFunctionRef hlil = func->GetHighLevelIL();
+				HighLevelILFunctionRef hlil = func->GetHighLevelILIfAvailable();
+				if (!hlil)
+					return SingleStep;
+
 				for (size_t i = 0; i < hlil->GetInstructionCount(); i++)
 				{
 					if (hlil->GetInstruction(i).address == newRemoteRip)
@@ -491,7 +500,10 @@ DebugStopReason DebuggerController::StepOverIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				LowLevelILFunctionRef llil = func->GetLowLevelIL();
+				LowLevelILFunctionRef llil = func->GetLowLevelILIfAvailable();
+				if (!llil)
+					return SingleStep;
+
 				size_t start = llil->GetInstructionStart(m_liveView->GetDefaultArchitecture(), newRemoteRip);
 				if (start < llil->GetInstructionCount())
 				{
@@ -517,7 +529,10 @@ DebugStopReason DebuggerController::StepOverIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				MediumLevelILFunctionRef mlil = func->GetMediumLevelIL();
+				MediumLevelILFunctionRef mlil = func->GetMediumLevelILIfAvailable();
+				if (!mlil)
+					return SingleStep;
+
 				size_t start = mlil->GetInstructionStart(m_liveView->GetDefaultArchitecture(), newRemoteRip);
 				if (start < mlil->GetInstructionCount())
 				{
@@ -545,7 +560,10 @@ DebugStopReason DebuggerController::StepOverIL(BNFunctionGraphType il)
 
 			for (FunctionRef& func : functions)
 			{
-				HighLevelILFunctionRef hlil = func->GetHighLevelIL();
+				HighLevelILFunctionRef hlil = func->GetHighLevelILIfAvailable();
+				if (!hlil)
+					return SingleStep;
+
 				for (size_t i = 0; i < hlil->GetInstructionCount(); i++)
 				{
 					if (hlil->GetInstruction(i).address == newRemoteRip)