diff --git a/Makefile b/Makefile
index cb6bca6..8c22903 100644
--- a/Makefile
+++ b/Makefile
@@ -13,8 +13,8 @@
 
 PREFIX=/usr/local
 
-CC != command -v "$$CC" || printf 'cc\n'
-RUSTC != command -v "$$RUSTC" || printf 'rustc\n'
+CC?=cc
+RUSTC?=rustc
 RUSTLIBS=--extern getopt=build/o/libgetopt.rlib \
 	--extern sysexits=build/o/libsysexits.rlib \
 	--extern strerror=build/o/libstrerror.rlib