diff --git a/src/business/business-core/Makefile.am b/src/business/business-core/Makefile.am
index 4b3511f85f..90909cc35e 100644
--- a/src/business/business-core/Makefile.am
+++ b/src/business/business-core/Makefile.am
@@ -47,7 +47,7 @@ libgncmod_business_core_la_LIBADD = \
   ${GLIB_LIBS} \
   ${EFENCE_LIBS}
 
-						# business-core-helpers.c
+# business-core-helpers.c
 libgw_business_core_la_SOURCES = gw-business-core.c 
 libgw_business_core_la_LDFLAGS = -module ${G_WRAP_LINK_ARGS}
 
diff --git a/src/register/register-core/Makefile.am b/src/register/register-core/Makefile.am
index 8d0a596cec..d459ce8fb8 100644
--- a/src/register/register-core/Makefile.am
+++ b/src/register/register-core/Makefile.am
@@ -76,7 +76,7 @@ gw-register-core.scm gw-register-core.c gw-register-core.h: .scm-links gw-regist
 	  (primitive-load \"./gw-register-core-spec.scm\") \
 	  (gw:generate-module \"gw-register-core\")"
 
-BUILT_SOURCES += gw-register-core.scm gw-register-core.c gw-register-core.h
+BUILT_SOURCES = gw-register-core.scm gw-register-core.c gw-register-core.h
 CLEANFILES = gw-register-core.scm gw-register-core.c gw-register-core.h \
              gw-register-core.html gnucash g-wrapped register .scm-links