diff --git a/Makefile.inc1 b/Makefile.inc1
index 617366c0964a..74b83c356ca3 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -1778,9 +1778,7 @@ cddl/lib/libctf__L: lib/libz__L
 .endif
 # cddl/lib/libdtrace requires lib/libproc and lib/librtld_db; it's only built
 # on select architectures though (see cddl/lib/Makefile)
-.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_ARCH} == "amd64" || \
-	${MACHINE_CPUARCH} == "arm" || ${MACHINE_ARCH} == "i386" || \
-	${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc"
+.if ${MACHINE_CPUARCH} != "sparc64"
 _prebuild_libs+=	lib/libproc lib/librtld_db
 .endif
 
diff --git a/cddl/lib/Makefile b/cddl/lib/Makefile
index f418993200ed..9371865ca428 100644
--- a/cddl/lib/Makefile
+++ b/cddl/lib/Makefile
@@ -26,9 +26,7 @@ _libzpool=	libzpool
 .endif
 .endif
 
-.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_ARCH} == "amd64" || \
-	${MACHINE_CPUARCH} == "arm" || ${MACHINE_ARCH} == "i386" || \
-	${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc"
+.if ${MACHINE_CPUARCH} != "sparc64"
 _drti=		drti
 _libdtrace=	libdtrace
 .endif