diff --git a/calc/calc.spec b/calc/calc.spec
index c0ed182800..a239fd0157 100644
--- a/calc/calc.spec
+++ b/calc/calc.spec
@@ -59,6 +59,7 @@ AutoReqProv:  no
     %setup -q
 
 %build
+    PATH="%{l_prefix}/bin:$PATH"; export PATH
     chmod -R u+w .
     %{l_rpmtool} subst "s;<malloc.h>;<stdlib.h>;" -- *.[ch]
     %{l_make} %{l_mflags} \