diff --git a/eo-maven-plugin/src/main/java/org/eolang/maven/UnphiMojo.java b/eo-maven-plugin/src/main/java/org/eolang/maven/UnphiMojo.java
index 834c1b1ef1..e1ebc18fd4 100644
--- a/eo-maven-plugin/src/main/java/org/eolang/maven/UnphiMojo.java
+++ b/eo-maven-plugin/src/main/java/org/eolang/maven/UnphiMojo.java
@@ -95,6 +95,7 @@ public void exec() {
                             phi.getFileName().toString().replace(".phi", ""),
                             new TextOf(phi)
                         ).parsed();
+                        System.out.println(parsed);
                         home.save(parsed.toString(), xmir);
                         Logger.info(
                             this,
diff --git a/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/new-lines.yaml b/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/new-lines.yaml
new file mode 100644
index 0000000000..a4cd8c9c7c
--- /dev/null
+++ b/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/new-lines.yaml
@@ -0,0 +1,8 @@
+tests:
+  - /program/objects/o[@name='main' and @abstract and o[@name='x']]
+phi: |
+  {
+    main ↦ ⟦
+      x ↦ ξ.y
+    ⟧
+  }
\ No newline at end of file
diff --git a/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/spaces.yaml b/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/spaces.yaml
new file mode 100644
index 0000000000..a32699ea25
--- /dev/null
+++ b/eo-maven-plugin/src/test/resources/org/eolang/maven/unphi/spaces.yaml
@@ -0,0 +1,3 @@
+tests:
+  - /program/objects/o[@name='main' and @abstract and o[@name='x']]
+phi: "{main   ↦ ⟦ x ↦ ξ.y  ⟧   } "
\ No newline at end of file