diff --git a/abclib.dsp b/abclib.dsp
index 79aaf4962..59622d931 100644
--- a/abclib.dsp
+++ b/abclib.dsp
@@ -1287,6 +1287,10 @@ SOURCE=.\src\sat\bsat\satSolver2.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\sat\bsat\satSolver2i.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\sat\bsat\satStore.c
 # End Source File
 # Begin Source File