diff --git a/tests/lang/eval-okay-eq-derivations.exp b/tests/lang/eval-okay-eq-derivations.exp
new file mode 100644
index 0000000000..ec04aab6ae
--- /dev/null
+++ b/tests/lang/eval-okay-eq-derivations.exp
@@ -0,0 +1 @@
+[ true true true false ]
diff --git a/tests/lang/eval-okay-eq-derivations.nix b/tests/lang/eval-okay-eq-derivations.nix
new file mode 100644
index 0000000000..d526cb4a21
--- /dev/null
+++ b/tests/lang/eval-okay-eq-derivations.nix
@@ -0,0 +1,10 @@
+let
+
+  drvA1 = derivation { name = "a"; builder = "/foo"; system = "i686-linux"; };
+  drvA2 = derivation { name = "a"; builder = "/foo"; system = "i686-linux"; };
+  drvA3 = derivation { name = "a"; builder = "/foo"; system = "i686-linux"; } // { dummy = 1; };
+  
+  drvC1 = derivation { name = "c"; builder = "/foo"; system = "i686-linux"; };
+  drvC2 = derivation { name = "c"; builder = "/bar"; system = "i686-linux"; };
+
+in [ (drvA1 == drvA1) (drvA1 == drvA2) (drvA1 == drvA3) (drvC1 == drvC2) ]