diff --git a/src/ast/euf/euf_etable.cpp b/src/ast/euf/euf_etable.cpp
index 62dafdd68..43ad52726 100644
--- a/src/ast/euf/euf_etable.cpp
+++ b/src/ast/euf/euf_etable.cpp
@@ -72,7 +72,7 @@ namespace euf {
     void * etable::mk_table_for(unsigned arity, func_decl * d) {
         void * r;
         SASSERT(d->get_arity() >= 1);
-        SASSERT(arity >= d->get_arity());
+        SASSERT(arity >= d->get_arity() || d->is_associative());
         switch (arity) {
         case 1:
             r = TAG(void*, alloc(unary_table), UNARY);
diff --git a/src/math/lp/lp_api.h b/src/math/lp/lp_api.h
index d24a659ae..8c05f8354 100644
--- a/src/math/lp/lp_api.h
+++ b/src/math/lp/lp_api.h
@@ -66,7 +66,7 @@ namespace lp_api {
         lp::constraint_index get_constraint(bool b) const { return m_constraints[b]; }
 
         inf_rational get_value(bool is_true) const {
-            if (is_true == !get_lit().sign()) 
+            if (is_true != get_lit().sign()) 
                 return inf_rational(m_value);                         // v >= value or v <= value
             if (m_is_int) {
                 SASSERT(m_value.is_int());