diff --git a/icu4c/source/configure.ac b/icu4c/source/configure.ac
index b6065af7997..c858e1fd428 100644
--- a/icu4c/source/configure.ac
+++ b/icu4c/source/configure.ac
@@ -1349,6 +1349,7 @@ AC_CONFIG_FILES([icudefs.mk \
 		tools/pkgdata/Makefile \
 		tools/tzcode/Makefile \
 		tools/gencfu/Makefile \
+		tools/escapesrc/Makefile \
 		test/Makefile \
 		test/compat/Makefile \
 		test/testdata/Makefile \
diff --git a/icu4c/source/tools/Makefile.in b/icu4c/source/tools/Makefile.in
index 1cbef0005d4..8fb7876de76 100644
--- a/icu4c/source/tools/Makefile.in
+++ b/icu4c/source/tools/Makefile.in
@@ -17,7 +17,7 @@ subdir = tools
 
 SUBDIRS = toolutil ctestfw makeconv genrb genbrk \
 gencnval gensprep icuinfo genccode gencmn icupkg pkgdata \
-gentest gennorm2 gencfu gendict
+gentest gennorm2 gencfu gendict escapesrc
 
 ## List of phony targets
 .PHONY : all all-local all-recursive install install-local	\