diff --git a/src/Makefile.am b/src/Makefile.am
index 440f1bded5b5c5e2f7af64755c21974614ddedd2..04f097b6f9a67082464cb8b0b3b5a0df182b2f22 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,9 +10,11 @@ bin_PROGRAMS = \
 run-one-body-sample: one-body-sample
 	libtool --mode execute ./one-body-sample
 
+.PHONY: run-one-body-sample-valgrind
 run-one-body-sample-valgrind: one-body-sample
 	libtool --mode execute valgrind ./one-body-sample
 
+.PHONY: run-one-body-sample-gdb
 run-one-body-sample-gdb: one-body-sample
 	libtool --mode execute gdb ./one-body-sample