diff --git a/src/app/include.am b/src/app/include.am
index 8e86bbeeb5..7cf20191ab 100644
--- a/src/app/include.am
+++ b/src/app/include.am
@@ -9,9 +9,6 @@ noinst_HEADERS += \
 	src/app/main/ntmain.h
 
 src_app_tor_SOURCES = src/app/main/tor_main.c
-if BUILD_NT_SERVICES
-src_app_tor_SOURCES += src/app/main/ntmain.c
-endif
 
 # -L flags need to go in LDFLAGS. -l flags need to go in LDADD.
 # This seems to matter nowhere but on windows, but I assure you that it
diff --git a/src/core/include.am b/src/core/include.am
index b35367ccbb..1f37044e9a 100644
--- a/src/core/include.am
+++ b/src/core/include.am
@@ -101,6 +101,10 @@ LIBTOR_APP_A_SOURCES = 				\
 	src/feature/stats/geoip.c		\
 	src/feature/stats/rephist.c
 
+if BUILD_NT_SERVICES
+LIBTOR_APP_A_SOURCES += src/app/main/ntmain.c
+endif
+
 #
 # Modules are conditionnally compiled in tor starting here. We add the C files
 # only if the modules has been enabled at configure time. We always add the