diff --git a/backend_qt/backend_qt.pro b/backend_qt/backend_qt.pro
index c63d623e..a45fbe02 100644
--- a/backend_qt/backend_qt.pro
+++ b/backend_qt/backend_qt.pro
@@ -112,6 +112,7 @@ SOURCES += ../backend/2of5.c \
            ../backend/telepen.c \
            ../backend/tif.c \
            ../backend/upcean.c \
+           ../backend/vector.c \
            ../backend/qr.c \
            ../backend/dllversion.c \
            ../backend/code1.c \
diff --git a/backend_tcl/zint_tcl.dsp b/backend_tcl/zint_tcl.dsp
index 8613220b..ec36c658 100644
--- a/backend_tcl/zint_tcl.dsp
+++ b/backend_tcl/zint_tcl.dsp
@@ -256,6 +256,10 @@ SOURCE=..\backend\upcean.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\backend\vector.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\zint.c
 # End Source File
 # End Group
diff --git a/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp b/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
index a0a81e0b..cc82825a 100644
--- a/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
+++ b/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
@@ -262,6 +262,10 @@ SOURCE=..\..\backend\tif.c
 
 SOURCE=..\..\backend\upcean.c
 # End Source File
+# Begin Source File
+
+SOURCE=..\..\backend\vector.c
+# End Source File
 # End Group
 # Begin Group "Header Files"