diff --git a/tools/server/server-context.cpp b/tools/server/server-context.cpp
index 6f737d94d0..43558f9dce 100644
--- a/tools/server/server-context.cpp
+++ b/tools/server/server-context.cpp
@@ -155,8 +155,8 @@ struct server_slot {
     int64_t t_start_process_prompt;
     int64_t t_start_generation;
 
-    double t_prompt_processing; // ms
-    double t_token_generation;  // ms
+    double t_prompt_processing = 0.0; // ms
+    double t_token_generation = 0.0;  // ms
 
     std::function<void(int /* id_slot */)> callback_on_release;
 
diff --git a/tools/server/server-task.h b/tools/server/server-task.h
index a49ddb594b..d855bf0876 100644
--- a/tools/server/server-task.h
+++ b/tools/server/server-task.h
@@ -261,14 +261,14 @@ struct result_timings {
     int32_t cache_n = -1;
 
     int32_t prompt_n = -1;
-    double prompt_ms;
-    double prompt_per_token_ms;
-    double prompt_per_second;
+    double prompt_ms = 0.0;
+    double prompt_per_token_ms = 0.0;
+    double prompt_per_second = 0.0;
 
     int32_t predicted_n = -1;
-    double predicted_ms;
-    double predicted_per_token_ms;
-    double predicted_per_second;
+    double predicted_ms = 0.0;
+    double predicted_per_token_ms = 0.0;
+    double predicted_per_second = 0.0;
 
     // Optional speculative metrics - only included when > 0
     int32_t draft_n = 0;