diff --git a/make.texinfo b/make.texinfo
index c088e5fa..26859ded 100644
--- a/make.texinfo
+++ b/make.texinfo
@@ -2581,7 +2581,8 @@ called @file{@var{name}.d} from a C source file called @file{@var{name}.c}:
 @example
 @group
 %.d: %.c
-        $(SHELL) -ec '$(CC) -M $(CPPFLAGS) $< | sed '\''s/$*.o/& $@@/g'\'' > $@@'
+        $(SHELL) -ec '$(CC) -M $(CPPFLAGS) $< \
+                      | sed '\''s/$*.o/& $@@/g'\'' > $@@'
 @end group
 @end example