diff --git a/common/changes/@educorvi/rita/develop_2024-10-21-08-30.json b/common/changes/@educorvi/rita/develop_2024-10-21-08-30.json
new file mode 100644
index 0000000..65c4f41
--- /dev/null
+++ b/common/changes/@educorvi/rita/develop_2024-10-21-08-30.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@educorvi/rita",
+      "comment": "fix incorrect comparisons",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@educorvi/rita"
+}
\ No newline at end of file
diff --git a/rita-core/src/logicElements/Atom.ts b/rita-core/src/logicElements/Atom.ts
index 1bb6f0c..981227c 100644
--- a/rita-core/src/logicElements/Atom.ts
+++ b/rita-core/src/logicElements/Atom.ts
@@ -58,7 +58,7 @@ export class Atom extends Formula {
             const k = a[i];
             if (k in object) {
                 object = object[k];
-            } else if (defaultVal) {
+            } else if (defaultVal !== undefined) {
                 return defaultVal;
             } else {
                 throw new UndefinedPathError(
@@ -96,7 +96,7 @@ export class Atom extends Formula {
             path: this.path,
         };
         if (this.isDate) at['isDate'] = true;
-        if (this.defaultValue) at['default'] = this.defaultValue;
+        if (this.defaultValue !== undefined) at['default'] = this.defaultValue;
         return at;
     }