diff --git a/src/ifcparse/IfcEntityInstanceData.h b/src/ifcparse/IfcEntityInstanceData.h
index bf1f4789f6..dc97e7f0c8 100644
--- a/src/ifcparse/IfcEntityInstanceData.h
+++ b/src/ifcparse/IfcEntityInstanceData.h
@@ -165,7 +165,7 @@ namespace IfcParse {
     }
 }
 
-#if IFOPSH_WITH_ROCKSDB
+#ifdef IFOPSH_WITH_ROCKSDB
 
 namespace impl {
 
diff --git a/src/ifcparse/rocksdb_map_adapter.h b/src/ifcparse/rocksdb_map_adapter.h
index a6254356c6..da2346789f 100644
--- a/src/ifcparse/rocksdb_map_adapter.h
+++ b/src/ifcparse/rocksdb_map_adapter.h
@@ -274,7 +274,7 @@ public:
         }
 
         iterator& operator++() {
-#if IFOPSH_WITH_ROCKSDB
+#ifdef IFOPSH_WITH_ROCKSDB
             if (it_) {
                 it_->Next();
                 check_valid();