diff --git a/gen_input/templates/llvm/CORENAME.cpp.gtl b/gen_input/templates/llvm/CORENAME.cpp.gtl
index 2a6b4e5..2c70e42 100644
--- a/gen_input/templates/llvm/CORENAME.cpp.gtl
+++ b/gen_input/templates/llvm/CORENAME.cpp.gtl
@@ -31,12 +31,14 @@
  *******************************************************************************/
 // clang-format off
 #include <iss/arch/${coreDef.name.toLowerCase()}.h>
+// vm_base needs to be included before gdb_session as termios.h (via boost and gdb_server) has a define which clashes with a variable
+// name in ConstantRange.h
+#include <iss/llvm/vm_base.h>
+#include <iss/iss.h>
 #include <iss/debugger/gdb_session.h>
 #include <iss/debugger/server.h>
-#include <iss/iss.h>
-#include <iss/llvm/vm_base.h>
-#include <util/logging.h>
 #include <iss/instruction_decoder.h>
+#include <util/logging.h>
 <%def fcsr = registers.find {it.name=='FCSR'}
 if(fcsr != null) {%>
 #include <vm/fp_functions.h><%}%>
diff --git a/src/vm/llvm/vm_tgc5c.cpp b/src/vm/llvm/vm_tgc5c.cpp
index 3253990..b607f0a 100644
--- a/src/vm/llvm/vm_tgc5c.cpp
+++ b/src/vm/llvm/vm_tgc5c.cpp
@@ -31,10 +31,12 @@
  *******************************************************************************/
 // clang-format off
 #include <iss/arch/tgc5c.h>
+// vm_base needs to be included before gdb_session as termios.h (via boost and gdb_server) has a define which clashes with a variable
+// name in ConstantRange.h
+#include <iss/llvm/vm_base.h>
 #include <iss/debugger/gdb_session.h>
 #include <iss/debugger/server.h>
 #include <iss/iss.h>
-#include <iss/llvm/vm_base.h>
 #include <util/logging.h>
 #include <iss/instruction_decoder.h>