diff --git a/src/api/api_model.cpp b/src/api/api_model.cpp
index 664022f2e..c95a36df5 100644
--- a/src/api/api_model.cpp
+++ b/src/api/api_model.cpp
@@ -79,11 +79,7 @@ extern "C" {
         Z3_TRY;
         LOG_Z3_model_has_interp(c, m, a);
         CHECK_NON_NULL(m, 0);
-        if (to_model_ref(m)->has_interpretation(to_func_decl(a))) {
-            return true;
-        } else {
-            return false;
-        }
+        return to_model_ref(m)->has_interpretation(to_func_decl(a));
         Z3_CATCH_RETURN(false);
     }
 
diff --git a/src/muz/rel/dl_base.h b/src/muz/rel/dl_base.h
index decf499a2..d307912be 100644
--- a/src/muz/rel/dl_base.h
+++ b/src/muz/rel/dl_base.h
@@ -1120,10 +1120,7 @@ namespace datalog {
             virtual bool operator==(const iterator_core & it) {
                 //we worry about the equality operator only because of checking 
                 //the equality with the end() iterator
-                if(is_finished() && it.is_finished()) {
-                    return true;
-                }
-                return false;
+                return is_finished() && it.is_finished();
             }
         private:
             //private and undefined copy constructor and assignment operator
@@ -1153,10 +1150,7 @@ namespace datalog {
             virtual bool operator==(const row_iterator_core & it) {
                 //we worry about the equality operator only because of checking 
                 //the equality with the end() iterator
-                if(is_finished() && it.is_finished()) {
-                    return true;
-                }
-                return false;
+                return is_finished() && it.is_finished();
             }
         private:
             //private and undefined copy constructor and assignment operator