diff --git a/js-assembler/runtime-src/baselib-exceptions.js b/js-assembler/runtime-src/baselib-exceptions.js
index e2ea93f..eebd958 100644
--- a/js-assembler/runtime-src/baselib-exceptions.js
+++ b/js-assembler/runtime-src/baselib-exceptions.js
@@ -145,13 +145,6 @@
               ExnFailContract.constructor(message, contMarks));
     };
 
-    var raiseOperatorIsNotClosure = function(MACHINE, operator) {
-        var message = baselib.format.format("not a closure: ~e",
-                                            [operator]);
-        var contMarks = MACHINE.captureContinuationMarks();
-        raise(MACHINE,
-              ExnFailContract.constructor(message, contMarks));
-    };
 
     var raiseOperatorIsNotPrimitiveProcedure = function(MACHINE, operator) {
         var message = baselib.format.format("not a primitive procedure: ~e",
@@ -235,7 +228,6 @@
     exceptions.raiseContextExpectedValuesError = raiseContextExpectedValuesError;
     exceptions.raiseArityMismatchError = raiseArityMismatchError;
     exceptions.raiseOperatorApplicationError = raiseOperatorApplicationError;
-    exceptions.raiseOperatorIsNotClosure = raiseOperatorIsNotClosure;
     exceptions.raiseOperatorIsNotPrimitiveProcedure = raiseOperatorIsNotPrimitiveProcedure;
     exceptions.raiseUnimplementedPrimitiveError = raiseUnimplementedPrimitiveError;
 
diff --git a/js-assembler/runtime-src/runtime.js b/js-assembler/runtime-src/runtime.js
index 48842e1..8e66cad 100644
--- a/js-assembler/runtime-src/runtime.js
+++ b/js-assembler/runtime-src/runtime.js
@@ -108,7 +108,6 @@
     var raiseArityMismatchError = baselib.exceptions.raiseArityMismatchError;
     var raiseOperatorApplicationError = baselib.exceptions.raiseOperatorApplicationError;
     var raiseOperatorIsNotPrimitiveProcedure = baselib.exceptions.raiseOperatorIsNotPrimitiveProcedure;
-    var raiseOperatorIsNotClosure = baselib.exceptions.raiseOperatorIsNotClosure;
     var raiseUnimplementedPrimitiveError = baselib.exceptions.raiseUnimplementedPrimitiveError;
 
 
@@ -635,7 +634,7 @@
 
     var checkClosureAndArity = function(M) {
         if(!(M.p instanceof Closure)){
-            raiseOperatorIsNotClosure(M,M.p);
+            raiseOperatorApplicationError(M,M.p);
         }
         if(!isArityMatching(M.p.racketArity,M.a)) {
             raiseArityMismatchError(M,M.p,M.a);
@@ -722,7 +721,6 @@
     exports['raiseArityMismatchError'] = raiseArityMismatchError;
     exports['raiseOperatorApplicationError'] = raiseOperatorApplicationError;
     exports['raiseOperatorIsNotPrimitiveProcedure'] = raiseOperatorIsNotPrimitiveProcedure;
-    exports['raiseOperatorIsNotClosure'] = raiseOperatorIsNotClosure;
     exports['raiseUnimplementedPrimitiveError'] = raiseUnimplementedPrimitiveError;
 
 
diff --git a/version.rkt b/version.rkt
index 9d352fe..e7851c3 100644
--- a/version.rkt
+++ b/version.rkt
@@ -7,4 +7,4 @@
 (provide version)
 (: version String)
 
-(define version "1.88")
+(define version "1.89")