diff --git a/gnu/packages/lisp.scm b/gnu/packages/lisp.scm
index d053ab3a4e..f9d1c26518 100644
--- a/gnu/packages/lisp.scm
+++ b/gnu/packages/lisp.scm
@@ -70,7 +70,7 @@ (define-public gcl
        ("texinfo" ,texinfo)
        ("texlive" ,texlive)))
     (home-page "http://www.gnu.org/software/gcl")
-    (synopsis "Common Lisp implementation")
+    (synopsis "A Common Lisp implementation")
     (description "GCL is an implementation of the Common Lisp language.  It
 features the ability to compile to native object code and to load native
 object code modules directly into its lisp core.  It also features a
diff --git a/gnu/packages/scheme.scm b/gnu/packages/scheme.scm
index 58740e5e21..4c00c0374b 100644
--- a/gnu/packages/scheme.scm
+++ b/gnu/packages/scheme.scm
@@ -123,7 +123,7 @@ (define-public mit-scheme
     (supported-systems (delete "mips64el-linux" %supported-systems))
 
     (home-page "http://www.gnu.org/software/mit-scheme/")
-    (synopsis "Scheme implementation with integrated editor and debugger")
+    (synopsis "A Scheme implementation with integrated editor and debugger")
     (description
      "GNU/MIT Scheme is an implementation of the Scheme programming
 language.  It provides an interpreter, a compiler and a debugger.  It also