diff --git a/lib/dns/tests/Makefile.in b/lib/dns/tests/Makefile.in
index c41e59f56c..f52f3d3cd4 100644
--- a/lib/dns/tests/Makefile.in
+++ b/lib/dns/tests/Makefile.in
@@ -11,10 +11,6 @@ srcdir =	@srcdir@
 VPATH =		@srcdir@
 top_srcdir =	@top_srcdir@
 
-# Attempt to disable parallel processing.
-.NOTPARALLEL:
-.NO_PARALLEL:
-
 VERSION=@BIND9_VERSION@
 
 @BIND9_MAKE_INCLUDES@
@@ -106,7 +102,7 @@ acl_test@EXEEXT@: acl_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 			acl_test.@O@ dnstest.@O@ ${DNSLIBS} \
 				${ISCLIBS} ${LIBS}
 
-db_test@EXEEXT@: db_test.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
+db_test@EXEEXT@: db_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
 			db_test.@O@ dnstest.@O@ ${DNSLIBS} \
 			${ISCLIBS} ${LIBS}
@@ -146,7 +142,7 @@ dnstap_test@EXEEXT@: dnstap_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 			dnstap_test.@O@ dnstest.@O@ ${DNSLIBS} \
 				${ISCLIBS} ${LIBS}
 
-dst_test@EXEEXT@: dst_test.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
+dst_test@EXEEXT@: dst_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
 			dst_test.@O@ dnstest.@O@ ${DNSLIBS} \
 			${ISCLIBS} ${LIBS}
@@ -204,7 +200,7 @@ rbt_test@EXEEXT@: rbt_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 			rbt_test.@O@ dnstest.@O@ ${DNSLIBS} \
 				${ISCLIBS} ${LIBS}
 
-rdata_test@EXEEXT@: rdata_test.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
+rdata_test@EXEEXT@: rdata_test.@O@ dnstest.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
 			rdata_test.@O@ dnstest.@O@ ${DNSLIBS} \
 			${ISCLIBS} ${LIBS}
diff --git a/lib/irs/tests/Makefile.in b/lib/irs/tests/Makefile.in
index e0c2057722..c33636c625 100644
--- a/lib/irs/tests/Makefile.in
+++ b/lib/irs/tests/Makefile.in
@@ -11,10 +11,6 @@ srcdir =	@srcdir@
 VPATH =		@srcdir@
 top_srcdir =	@top_srcdir@
 
-# Attempt to disable parallel processing.
-.NOTPARALLEL:
-.NO_PARALLEL:
-
 VERSION=@BIND9_VERSION@
 
 @BIND9_MAKE_INCLUDES@
diff --git a/lib/isc/tests/Makefile.in b/lib/isc/tests/Makefile.in
index ff3077adec..65ed5ee5c2 100644
--- a/lib/isc/tests/Makefile.in
+++ b/lib/isc/tests/Makefile.in
@@ -11,10 +11,6 @@ srcdir =	@srcdir@
 VPATH =		@srcdir@
 top_srcdir =	@top_srcdir@
 
-# Attempt to disable parallel processing.
-.NOTPARALLEL:
-.NO_PARALLEL:
-
 VERSION=@BIND9_VERSION@
 
 @BIND9_MAKE_INCLUDES@
diff --git a/lib/isccfg/tests/Makefile.in b/lib/isccfg/tests/Makefile.in
index e66ae8f30f..3fe2548b00 100644
--- a/lib/isccfg/tests/Makefile.in
+++ b/lib/isccfg/tests/Makefile.in
@@ -11,10 +11,6 @@ srcdir =	@srcdir@
 VPATH =		@srcdir@
 top_srcdir =	@top_srcdir@
 
-# Attempt to disable parallel processing.
-.NOTPARALLEL:
-.NO_PARALLEL:
-
 VERSION=@BIND9_VERSION@
 
 @BIND9_MAKE_INCLUDES@