diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/vector/CachedReplaceVectorNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/vector/CachedReplaceVectorNode.java
index ac985c1a1189b938f93d676c091318aa4e3b57c9..76de77faaab09c7b3e66c2edec3fea6de04b6f73 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/vector/CachedReplaceVectorNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/vector/CachedReplaceVectorNode.java
@@ -341,6 +341,9 @@ final class CachedReplaceVectorNode extends CachedVectorNode {
             case PairList:
                 vector = RType.List;
                 break;
+            case Environment:
+                vector = RType.List;
+                break;
             default:
                 vector = this.vectorType;
                 break;
diff --git a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/ExpectedTestOutput.test b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/ExpectedTestOutput.test
index b34ed25ea9f25a70ff69ec75eb4382bdc7619657..3a09e444bf63776181974d2bd2edc57ec6eddacf 100644
--- a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/ExpectedTestOutput.test
+++ b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/ExpectedTestOutput.test
@@ -100260,6 +100260,14 @@ NULL
 [1] FALSE
 
 
+##com.oracle.truffle.r.test.library.base.TestSimpleVectors.testScalarUpdate
+#{ e < new.env(); e[["abc"]] <- 3}
+Error: object 'e' not found
+
+##com.oracle.truffle.r.test.library.base.TestSimpleVectors.testScalarUpdate
+#{ e < new.env(); e[["abc"]] <- NULL}
+Error: object 'e' not found
+
 ##com.oracle.truffle.r.test.library.base.TestSimpleVectors.testScalarUpdate
 #{ f <- function() { a[3] <- 4 } ; f() }
 Error in a[3] <- 4 : object 'a' not found
diff --git a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/library/base/TestSimpleVectors.java b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/library/base/TestSimpleVectors.java
index 7be447ea80c3ebcece8ee9e82e6d441dbeeea5a6..3582fb18d40494af8a2a1ef6324e413a7af576fd 100644
--- a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/library/base/TestSimpleVectors.java
+++ b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/library/base/TestSimpleVectors.java
@@ -1383,6 +1383,8 @@ public class TestSimpleVectors extends TestBase {
         assertEval("{ b <- c(\"a\",\"b\") ; z <- b ; b[[3L]] <- \"xx\" ; b }");
 
         assertEval("{ x <- as.list(1:2) ; x[[\"z\"]] <- NULL ; x }");
+        assertEval("{ e < new.env(); e[[\"abc\"]] <- 3}");
+        assertEval("{ e < new.env(); e[[\"abc\"]] <- NULL}");
 
         assertEval("{ x<-5:1; x[0-2]<-1000; x }");
         assertEval("{ x<-c(); x[[TRUE]] <- 2; x }");