diff --git a/build/pkgs/ecm/spkg-configure.m4 b/build/pkgs/ecm/spkg-configure.m4
index e0a397100ba..1c027607b31 100644
--- a/build/pkgs/ecm/spkg-configure.m4
+++ b/build/pkgs/ecm/spkg-configure.m4
@@ -1,5 +1,4 @@
-SAGE_SPKG_CONFIGURE([ecm], [
-    # CHECK - test whether the package is already installed
+SAGE_SPKG_CONFIGURE([ecm], [dnl CHECK - test whether the package is already installed
     m4_pushdef([SAGE_ECM_MINVER],[7.0.4])
     SAGE_SPKG_DEPCHECK([gmp], [
         AC_CHECK_HEADER(ecm.h, [