diff --git a/GNUmakefile.in b/GNUmakefile.in
index b565122e7439f94239681c07137df4bc55a2ef23..6105b511aaea1e6d71c3d13ed73fd9a4784b77b7 100644
--- a/GNUmakefile.in
+++ b/GNUmakefile.in
@@ -99,7 +99,7 @@ install:
 	$(MAKE) -C contrib/dblink $@
 	$(MAKE) -C contrib/ndpplugin $@
 	$(MAKE) -C contrib/common_cipher $@
-	@if test -d contrib/spq_plugin; then $(MAKE) -C contrib/spq_plugin $@; fi
+	@if test -d contrib/spq_plugin; then $(MAKE) -C contrib/spq_plugin/src; $(MAKE) -C contrib/spq_plugin $@; fi
 	@if test -d contrib/dolphin; then $(MAKE) -C contrib/dolphin $@; fi
 	@if test -d contrib/age; then $(MAKE) -C contrib/age $@; fi
 	@if test -d contrib/datavec; then $(MAKE) -C contrib/datavec clean; fi