diff --git a/src/duneevaluate.mk b/src/duneevaluate.mk
index 047d72a1b81aa15d61581fc900770eb0722897e0..9dcc57246127e59324eb4a3a13f539ec051395ed 100644
--- a/src/duneevaluate.mk
+++ b/src/duneevaluate.mk
@@ -7,4 +7,4 @@ duneevaluate.oct: duneevaluate.o
 	$(MKOCTFILE) -o $@ $< -ldunecommon
 
 duneevaluate.o: duneevaluate.cc
-	$(MKOCTFILE) $(AM_CPPFLAGS) -c -o $@ $<
+	$(MKOCTFILE) $(DEFS) $(AM_CPPFLAGS) -c -o $@ $<
diff --git a/src/duneminimise.mk b/src/duneminimise.mk
index 58a6d3bd5397b36540e91e6173f7b31c9b422b29..63616381abf2c913c0e1c41795b90e3e49e4d756 100644
--- a/src/duneminimise.mk
+++ b/src/duneminimise.mk
@@ -7,4 +7,4 @@ duneminimise.oct: duneminimise.o
 	$(MKOCTFILE) -o $@ $< -ldunecommon
 
 duneminimise.o: duneminimise.cc
-	$(MKOCTFILE) $(AM_CPPFLAGS) -c -o $@ $<
+	$(MKOCTFILE) $(DEFS) $(AM_CPPFLAGS) -c -o $@ $<