diff --git a/Visual Studio Projects/PDP7.vcproj b/Visual Studio Projects/PDP7.vcproj
index a82ee620..3f02df42 100644
--- a/Visual Studio Projects/PDP7.vcproj	
+++ b/Visual Studio Projects/PDP7.vcproj	
@@ -204,6 +204,10 @@
 				RelativePath="..\PDP18B\pdp18b_fpp.c"
 				>
 			</File>
+			<File
+				RelativePath="..\PDP18B\pdp18b_g2tty.c"
+				>
+			</File>
 			<File
 				RelativePath="..\PDP18B\pdp18b_lp.c"
 				>
diff --git a/descrip.mms b/descrip.mms
index 413e6665..ce703faa 100644
--- a/descrip.mms
+++ b/descrip.mms
@@ -546,7 +546,8 @@ PDP18B_SOURCE = $(PDP18B_DIR)PDP18B_DT.C,$(PDP18B_DIR)PDP18B_DRM.C,\
                 $(PDP18B_DIR)PDP18B_MT.C,$(PDP18B_DIR)PDP18B_RF.C,\
                 $(PDP18B_DIR)PDP18B_RP.C,$(PDP18B_DIR)PDP18B_STDDEV.C,\
                 $(PDP18B_DIR)PDP18B_SYS.C,$(PDP18B_DIR)PDP18B_TT1.C,\
-                $(PDP18B_DIR)PDP18B_RB.C,$(PDP18B_DIR)PDP18B_FPP.C
+                $(PDP18B_DIR)PDP18B_RB.C,$(PDP18B_DIR)PDP18B_FPP.C,\
+                $(PDP18B_DIR)PDP18B_G2TTY.C
 PDP4_OPTIONS = /INCL=($(SIMH_DIR),$(PDP18B_DIR))/DEF=($(CC_DEFS),"PDP4=1")
 PDP7_OPTIONS = /INCL=($(SIMH_DIR),$(PDP18B_DIR))/DEF=($(CC_DEFS),"PDP7=1")
 PDP9_OPTIONS = /INCL=($(SIMH_DIR),$(PDP18B_DIR))/DEF=($(CC_DEFS),"PDP9=1")