diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
index e1483e8ac19..764eaf8c269 100644
--- a/src/libstore/globals.cc
+++ b/src/libstore/globals.cc
@@ -74,8 +74,7 @@ Settings settings;
 static GlobalConfig::Register rSettings(&settings);
 
 Settings::Settings()
-    : nixPrefix(NIX_PREFIX)
-    , nixStore(
+    : nixStore(
 #ifndef _WIN32
           // On Windows `/nix/store` is not a canonical path, but we dont'
           // want to deal with that yet.
diff --git a/src/libstore/include/nix/store/globals.hh b/src/libstore/include/nix/store/globals.hh
index 6d61442fe68..b4f1e4324c4 100644
--- a/src/libstore/include/nix/store/globals.hh
+++ b/src/libstore/include/nix/store/globals.hh
@@ -79,8 +79,6 @@ public:
 
     static unsigned int getDefaultCores();
 
-    Path nixPrefix;
-
     /**
      * The directory where we store sources and derived files.
      */
diff --git a/src/libstore/meson.build b/src/libstore/meson.build
index c0732d22de0..b8bc00c8972 100644
--- a/src/libstore/meson.build
+++ b/src/libstore/meson.build
@@ -251,7 +251,6 @@ endif
 # Aside from prefix itself, each of these was made into an absolute path
 # by joining it with prefix, unless it was already an absolute path
 # (which is the default for store-dir, localstatedir, and log-dir).
-configdata_priv.set_quoted('NIX_PREFIX', prefix)
 configdata_priv.set_quoted('NIX_STORE_DIR', store_dir)
 configdata_priv.set_quoted('NIX_DATA_DIR', datadir)
 configdata_priv.set_quoted('NIX_STATE_DIR', localstatedir / 'nix')