diff --git a/src/gtk.inc b/src/gtk.inc
index d89c7468d4..7f52c9f7b2 100644
--- a/src/gtk.inc
+++ b/src/gtk.inc
@@ -134,6 +134,7 @@ LIB_CPP_SRC=\
 \
  unix/utilsunx.cpp \
 \
+ generic/caret.cpp \
  generic/choicdgg.cpp \
  generic/dcpsg.cpp \
  generic/colrdlgg.cpp \
diff --git a/src/motif.inc b/src/motif.inc
index 6918486cd7..3852db1ea1 100644
--- a/src/motif.inc
+++ b/src/motif.inc
@@ -133,6 +133,7 @@ LIB_CPP_SRC=\
  motif/wave.cpp \
  motif/window.cpp \
 \
+ generic/caret.cpp \
  generic/choicdgg.cpp \
  generic/colrdlgg.cpp \
  generic/dcpsg.cpp \