diff --git a/Changes b/Changes
index 4d38b3a6d..9e2e16d38 100644
--- a/Changes
+++ b/Changes
@@ -9,6 +9,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 **** Fix CDCRSTLOGIC report showing endpoint flops without resets.
 
+**** Fix compiler warnings on SPARC, bug288. [Ahmed El-Mahmoudy]
+
 * Verilator 3.812 2011/04/06
 
 ***  Add --trace-max-width and --trace-max-array, bug319.  [Alex Solomatnikov]
diff --git a/src/V3AstNodes.h b/src/V3AstNodes.h
index b2260f8b6..235fe93b8 100644
--- a/src/V3AstNodes.h
+++ b/src/V3AstNodes.h
@@ -3184,9 +3184,9 @@ struct AstBufIf1 : public AstNodeBiop {
     ASTNODE_NODE_FUNCS(BufIf1, BUFIF1)
     virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opBufIf1(lhs,rhs); }
     virtual string emitVerilog() { return "bufif(%r,%l)"; }
-    virtual string emitC() { V3ERROR_NA; return false;}  // Lclean || Rclean
+    virtual string emitC() { V3ERROR_NA; return "";}  // Lclean || Rclean
     virtual string emitSimpleOperator() { V3ERROR_NA; return false;}  // Lclean || Rclean
-    virtual bool cleanOut() {V3ERROR_NA; return false;}  // Lclean || Rclean
+    virtual bool cleanOut() {V3ERROR_NA; return "";}  // Lclean || Rclean
     virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };