diff --git a/src/Makefile.am b/src/Makefile.am
index 79c9ab27e212be9a530136493788983cee234888..1cb824f605b5c7510224c67d5fe19738645e034a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -54,7 +54,7 @@ OCTAVE    ?= octave
 
 OCTAVE_MODULES= duneminimise duneevaluate
 
-.PHONY:
+.PHONY: run-octave
 run-octave: $(addsuffix .oct,$(OCTAVE_MODULES))
 	$(OCTAVE) --path $(abs_builddir) --path $(abs_srcdir)