diff --git a/src/darwin/Framework/CHIP/MTRDevice.mm b/src/darwin/Framework/CHIP/MTRDevice.mm
index f739ba6e83f62d..d8fc52b1a2fc6e 100644
--- a/src/darwin/Framework/CHIP/MTRDevice.mm
+++ b/src/darwin/Framework/CHIP/MTRDevice.mm
@@ -625,14 +625,14 @@ - (NSString *)description
 
     NSString * reportAge;
     if (mostRecentReportTime) {
-        reportAge = [NSString stringWithFormat:@" (%.0fs ago)", -[mostRecentReportTime timeIntervalSinceNow]];
+        reportAge = [NSString stringWithFormat:@" (%.0lfs ago)", -[mostRecentReportTime timeIntervalSinceNow]];
     } else {
         reportAge = @"";
     }
 
     NSString * subscriptionFailureAge;
     if (lastSubscriptionFailureTime) {
-        subscriptionFailureAge = [NSString stringWithFormat:@" (%.0fs ago)", -[lastSubscriptionFailureTime timeIntervalSinceNow]];
+        subscriptionFailureAge = [NSString stringWithFormat:@" (%.0lfs ago)", -[lastSubscriptionFailureTime timeIntervalSinceNow]];
     } else {
         subscriptionFailureAge = @"";
     }
diff --git a/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm b/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
index 57d2c53c1f5eba..e22b0b8edff243 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
+++ b/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
@@ -538,14 +538,14 @@ - (NSString *)description
 
     NSString * reportAge;
     if (mostRecentReportTime) {
-        reportAge = [NSString stringWithFormat:@" (%.0fs ago)", -[mostRecentReportTime timeIntervalSinceNow]];
+        reportAge = [NSString stringWithFormat:@" (%.0lfs ago)", -[mostRecentReportTime timeIntervalSinceNow]];
     } else {
         reportAge = @"";
     }
 
     NSString * subscriptionFailureAge;
     if (lastSubscriptionFailureTime) {
-        subscriptionFailureAge = [NSString stringWithFormat:@" (%.0fs ago)", -[lastSubscriptionFailureTime timeIntervalSinceNow]];
+        subscriptionFailureAge = [NSString stringWithFormat:@" (%.0lfs ago)", -[lastSubscriptionFailureTime timeIntervalSinceNow]];
     } else {
         subscriptionFailureAge = @"";
     }