diff --git a/debian/_base/dependencies/tqt3/debian/rules b/debian/_base/dependencies/tqt3/debian/rules
index b83a3da10..070591030 100755
--- a/debian/_base/dependencies/tqt3/debian/rules
+++ b/debian/_base/dependencies/tqt3/debian/rules
@@ -43,6 +43,8 @@ P_APPSDEV = $(DEBIAN)/tqt3-apps-dev
 P_HEADERS = $(DEBIAN)/libtqt3-headers
 P_QTMTDEV = $(DEBIAN)/libtqt3-mt-dev
 
+RPC_INCLUDES = $(if $(wildcard /usr/include/tirpc),-I/usr/include/tirpc,)
+
 TMP_INSTALL = $(DEBIAN)/tmp-install
 
 CONFIGURE_OPTS = \
@@ -102,6 +104,8 @@ CONFIGURE_OPTS = \
 		-I/usr/include/freetype2	\
 		-I`pg_config --includedir`	\
 		-I`pg_config --includedir-server`	\
+		$(RPC_INCLUDES)			\
+						\
 		-L/usr/lib/$(DEB_HOST_MULTIARCH)\
 						\
 		-lfontconfig			\
diff --git a/dilos/dependencies/tqt3/debian/rules b/dilos/dependencies/tqt3/debian/rules
index 228582b63..d89739167 100755
--- a/dilos/dependencies/tqt3/debian/rules
+++ b/dilos/dependencies/tqt3/debian/rules
@@ -35,6 +35,8 @@ P_APPSDEV = $(DEBIAN)/tqt3-apps-dev
 P_HEADERS = $(DEBIAN)/libtqt3-headers
 P_QTMTDEV = $(DEBIAN)/libtqt3-mt-dev
 
+RPC_INCLUDES = $(if $(wildcard /usr/include/tirpc),-I/usr/include/tirpc,)
+
 TMP_INSTALL = $(DEBIAN)/tmp-install
 
 CONFIGURE_OPTS = \
@@ -94,6 +96,8 @@ CONFIGURE_OPTS = \
 		-I/usr/include/freetype2	\
 		-I`pg_config --includedir`	\
 		-I`pg_config --includedir-server`	\
+		$(RPC_INCLUDES)			\
+						\
 		-L/usr/lib/$(DEB_HOST_MULTIARCH)\
 						\
 		-lfontconfig			\
diff --git a/ubuntu/_base/dependencies/tqt3/debian/rules b/ubuntu/_base/dependencies/tqt3/debian/rules
index b83a3da10..070591030 100755
--- a/ubuntu/_base/dependencies/tqt3/debian/rules
+++ b/ubuntu/_base/dependencies/tqt3/debian/rules
@@ -43,6 +43,8 @@ P_APPSDEV = $(DEBIAN)/tqt3-apps-dev
 P_HEADERS = $(DEBIAN)/libtqt3-headers
 P_QTMTDEV = $(DEBIAN)/libtqt3-mt-dev
 
+RPC_INCLUDES = $(if $(wildcard /usr/include/tirpc),-I/usr/include/tirpc,)
+
 TMP_INSTALL = $(DEBIAN)/tmp-install
 
 CONFIGURE_OPTS = \
@@ -102,6 +104,8 @@ CONFIGURE_OPTS = \
 		-I/usr/include/freetype2	\
 		-I`pg_config --includedir`	\
 		-I`pg_config --includedir-server`	\
+		$(RPC_INCLUDES)			\
+						\
 		-L/usr/lib/$(DEB_HOST_MULTIARCH)\
 						\
 		-lfontconfig			\