diff --git a/code/qcommon/vm_aarch64.c b/code/qcommon/vm_aarch64.c
index f4ea890499..eec0f14403 100644
--- a/code/qcommon/vm_aarch64.c
+++ b/code/qcommon/vm_aarch64.c
@@ -1681,9 +1681,6 @@ qboolean VM_Compile( vm_t *vm, vmHeader_t *header )
 		switch ( ci->op )
 		{
 			case OP_UNDEF:
-				emit( BRK( 0 ) );
-				break;
-
 			case OP_IGNORE:
 				ip += ci->value;
 				break;
diff --git a/code/qcommon/vm_armv7l.c b/code/qcommon/vm_armv7l.c
index f36548cd4e..593b24a458 100644
--- a/code/qcommon/vm_armv7l.c
+++ b/code/qcommon/vm_armv7l.c
@@ -1296,9 +1296,6 @@ qboolean VM_Compile( vm_t *vm, vmHeader_t *header )
 		switch ( ci->op )
 		{
 			case OP_UNDEF:
-				emit(BKPT(1));
-				break;
-
 			case OP_IGNORE:
 				ip += ci->value;
 				break;
diff --git a/code/qcommon/vm_interpreted.c b/code/qcommon/vm_interpreted.c
index 389ecb44a7..8fb028abf7 100644
--- a/code/qcommon/vm_interpreted.c
+++ b/code/qcommon/vm_interpreted.c
@@ -210,7 +210,7 @@ int VM_CallInterpreted2( vm_t *vm, int nargs, int32_t *args ) {
 		ci++;
 
 		switch ( opcode ) {
-
+		case OP_UNDEF:
 		case OP_IGNORE:
 			ci += v0;
 			goto nextInstruction2;
diff --git a/code/qcommon/vm_powerpc.c b/code/qcommon/vm_powerpc.c
index b6760bef2e..5391646309 100644
--- a/code/qcommon/vm_powerpc.c
+++ b/code/qcommon/vm_powerpc.c
@@ -1893,9 +1893,6 @@ qboolean VM_Compile( vm_t *vm, vmHeader_t *header )
 		switch ( ci->op )
 		{
 			case OP_UNDEF:
-				emit( PPC_TRAP() );
-				break;
-
 			case OP_IGNORE:
 				ip += ci->value;
 				break;
diff --git a/code/qcommon/vm_x86.c b/code/qcommon/vm_x86.c
index c54a8559e1..b025afd640 100644
--- a/code/qcommon/vm_x86.c
+++ b/code/qcommon/vm_x86.c
@@ -2913,9 +2913,6 @@ qboolean VM_Compile( vm_t *vm, vmHeader_t *header ) {
 		switch ( ci->op ) {
 
 			case OP_UNDEF:
-				emit_brk();			// int 3
-				break;
-
 			case OP_IGNORE:
 				ip += ci->value;
 				break;