diff --git a/common/sprinklers/Program.ts b/common/sprinklers/Program.ts
index fb937e9..c822562 100644
--- a/common/sprinklers/Program.ts
+++ b/common/sprinklers/Program.ts
@@ -41,7 +41,7 @@ export class Program {
     }
 
     toString(): string {
-        return `Program{name="${this.name}", enabled=${this.enabled}, schedule=${this.schedule},
-         sequence=${this.sequence}, running=${this.running}}`;
+        return `Program{name="${this.name}", enabled=${this.enabled}, schedule=${this.schedule}, ` +
+         `sequence=${this.sequence}, running=${this.running}}`;
     }
 }
diff --git a/common/sprinklers/SprinklersDevice.ts b/common/sprinklers/SprinklersDevice.ts
index 3ef1f4b..e159c9c 100644
--- a/common/sprinklers/SprinklersDevice.ts
+++ b/common/sprinklers/SprinklersDevice.ts
@@ -30,9 +30,9 @@ export abstract class SprinklersDevice {
     abstract unpauseSectionRunner(): Promise<{}>;
 
     toString(): string {
-        return `SprinklersDevice{id="${this.id}", connected=${this.connected},
-    sections=${this.sections},
-    programs=${this.programs},
-    sectionRunner=${this.sectionRunner} }`;
+        return `SprinklersDevice{id="${this.id}", connected=${this.connected}, ` +
+            `sections=[${this.sections}], ` +
+            `programs=[${this.programs}], ` +
+            `sectionRunner=${this.sectionRunner} }`;
     }
 }