1 files changed, 3 insertions, 3 deletions
diff --git a/src/library/scala/Predef.scala b/src/library/scala/Predef.scala
index 02b0bfef6b..6662c5cf36 100644
--- a/src/library/scala/Predef.scala
+++ b/src/library/scala/Predef.scala
@@ -87,7 +87,7 @@ object Predef {
       throw new java.lang.AssertionError("assertion failed")
   }
 
-  def assert(assertion: Boolean, message: Any) {
+  def assert(assertion: Boolean, message: => Any) {
     if (!assertion)
       throw new java.lang.AssertionError("assertion failed: "+ message)
   }
@@ -97,7 +97,7 @@ object Predef {
       throw new java.lang.AssertionError("assumption failed")
   }
 
-  def assume(assumption: Boolean, message: Any) {
+  def assume(assumption: Boolean, message: => Any) {
     if (!assumption)
       throw new java.lang.AssertionError("assumption failed: "+ message)
   }
@@ -107,7 +107,7 @@ object Predef {
       throw new IllegalArgumentException("requirement failed")
   }
 
-  def require(requirement: Boolean, message: Any) {
+  def require(requirement: Boolean, message: => Any) {
     if (!requirement)
       throw new IllegalArgumentException("requirement failed: "+ message)
   }