diff --git a/doc/build-unix.md b/doc/build-unix.md
index 1d8395162..17ac517ab 100644
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -11,7 +11,7 @@ for example, when specifying the path of the dependency:
 
 	../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX
 
-Here BDB_PREFIX must absolute path - it is defined using $(pwd) which ensures
+Here BDB_PREFIX must be an absolute path - it is defined using $(pwd) which ensures
 the usage of the absolute path.
 
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