diff --git a/src/interfaces/libpq/bcc32.mak b/src/interfaces/libpq/bcc32.mak
index 871752d22fa..0d53d0c9256 100644
--- a/src/interfaces/libpq/bcc32.mak
+++ b/src/interfaces/libpq/bcc32.mak
@@ -81,6 +81,7 @@ LIB32_OBJS= \
 	"$(INTDIR)\fe-print.obj" \
 	"$(INTDIR)\fe-secure.obj" \
 	"$(INTDIR)\pqexpbuffer.obj" \
+	"$(INTDIR)\pqsignal.obj" \
 	"$(INTDIR)\wchar.obj" \
 	"$(INTDIR)\encnames.obj"
 
@@ -111,6 +112,7 @@ CLEAN :
 	-@erase "$(INTDIR)\fe-print.obj"
 	-@erase "$(INTDIR)\fe-secure.obj"
 	-@erase "$(INTDIR)\pqexpbuffer.obj"
+	-@erase "$(INTDIR)\pqsignal.obj"
 	-@erase "$(OUTDIR)\libpqdll.obj"
 	-@erase "$(OUTDIR)\win32.obj"
 	-@erase "$(INTDIR)\wchar.obj"
diff --git a/src/interfaces/libpq/win32.mak b/src/interfaces/libpq/win32.mak
index c8c5af54a87..4c3c96e38ad 100644
--- a/src/interfaces/libpq/win32.mak
+++ b/src/interfaces/libpq/win32.mak
@@ -62,6 +62,7 @@ CLEAN :
 	-@erase "$(INTDIR)\fe-print.obj"
 	-@erase "$(INTDIR)\fe-secure.obj"
 	-@erase "$(INTDIR)\pqexpbuffer.obj"
+	-@erase "$(INTDIR)\pqsignal.obj"
 	-@erase "$(OUTDIR)\libpqdll.obj"
 	-@erase "$(OUTDIR)\win32.obj"
 	-@erase "$(OUTDIR)\$(OUTFILENAME).lib"
@@ -128,6 +129,7 @@ LIB32_OBJS= \
 	"$(INTDIR)\fe-print.obj" \
 	"$(INTDIR)\fe-secure.obj" \
 	"$(INTDIR)\pqexpbuffer.obj" \
+	"$(INTDIR)\pqsignal.obj" \
 	"$(INTDIR)\wchar.obj" \
 	"$(INTDIR)\encnames.obj" \
 	"$(INTDIR)\pthread-win32.obj"