diff --git a/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/IntersectionPackageSet.java b/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/IntersectionPackageSet.java
index 970cd992fffc..9d72f84642e9 100644
--- a/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/IntersectionPackageSet.java
+++ b/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/IntersectionPackageSet.java
@@ -24,6 +24,8 @@ public class IntersectionPackageSet extends PackageSetBase {
   private final PackageSet myFirstSet;
   private final PackageSet mySecondSet;
 
+  private String myText;
+
   public IntersectionPackageSet(PackageSet firstSet, PackageSet secondSet) {
     myFirstSet = firstSet;
     mySecondSet = secondSet;
@@ -58,18 +60,21 @@ public class IntersectionPackageSet extends PackageSetBase {
   @Override
   @NotNull
   public String getText() {
-    StringBuffer buf = new StringBuffer();
-    boolean needParen = myFirstSet.getNodePriority() > getNodePriority();
-    if (needParen) buf.append('(');
-    buf.append(myFirstSet.getText());
-    if (needParen) buf.append(')');
-    buf.append("&&");
-    needParen = mySecondSet.getNodePriority() > getNodePriority();
-    if (needParen) buf.append('(');
-    buf.append(mySecondSet.getText());
-    if (needParen) buf.append(')');
+    if (myText == null) {
+      final StringBuilder buf = new StringBuilder();
+      boolean needParen = myFirstSet.getNodePriority() > getNodePriority();
+      if (needParen) buf.append('(');
+      buf.append(myFirstSet.getText());
+      if (needParen) buf.append(')');
+      buf.append("&&");
+      needParen = mySecondSet.getNodePriority() > getNodePriority();
+      if (needParen) buf.append('(');
+      buf.append(mySecondSet.getText());
+      if (needParen) buf.append(')');
 
-    return buf.toString();
+      myText = buf.toString();
+    }
+    return myText;
   }
 
   public PackageSet getFirstSet() {
diff --git a/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/UnionPackageSet.java b/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/UnionPackageSet.java
index 3b51d8c52b6d..8198c2742c1b 100644
--- a/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/UnionPackageSet.java
+++ b/platform/analysis-api/src/com/intellij/psi/search/scope/packageSet/UnionPackageSet.java
@@ -24,6 +24,8 @@ public class UnionPackageSet extends PackageSetBase {
   private final PackageSet myFirstSet;
   private final PackageSet mySecondSet;
 
+  private String myText;
+
   public UnionPackageSet(@NotNull PackageSet set1, @NotNull PackageSet set2) {
     myFirstSet = set1;
     mySecondSet = set2;
@@ -54,7 +56,10 @@ public class UnionPackageSet extends PackageSetBase {
   @Override
   @NotNull
   public String getText() {
-    return myFirstSet.getText() + "||" + mySecondSet.getText();
+    if (myText == null) {
+      myText = myFirstSet.getText() + "||" + mySecondSet.getText();
+    }
+    return myText;
   }
 
   public PackageSet getFirstSet() {