diff --git a/src/klotski_core/all_cases/all_cases.cc b/src/klotski_core/all_cases/all_cases.cc
index 41c4838..eb2ca86 100644
--- a/src/klotski_core/all_cases/all_cases.cc
+++ b/src/klotski_core/all_cases/all_cases.cc
@@ -18,7 +18,7 @@ const std::vector<uint32_t> (&AllCases::fetch())[16] {
     return data_; // return const reference
 }
 
-AllCases::Status AllCases::status() {
+AllCases::Status AllCases::status() noexcept {
     if (available_) {
         return AVAILABLE; // data already built
     }
diff --git a/src/klotski_core/all_cases/all_cases.h b/src/klotski_core/all_cases/all_cases.h
index 62731f0..3092e6d 100644
--- a/src/klotski_core/all_cases/all_cases.h
+++ b/src/klotski_core/all_cases/all_cases.h
@@ -42,7 +42,7 @@ public:
     static void build();
 
     /// Get current status of AllCases.
-    static Status status();
+    static Status status() noexcept;
 
     /// Blocking access to constructed data.
     static const std::vector<uint32_t> (&fetch())[16];
diff --git a/src/klotski_core/all_cases/basic_ranges.cc b/src/klotski_core/all_cases/basic_ranges.cc
index 571fab7..9d89dc4 100644
--- a/src/klotski_core/all_cases/basic_ranges.cc
+++ b/src/klotski_core/all_cases/basic_ranges.cc
@@ -19,7 +19,7 @@ const std::vector<uint32_t>& BasicRanges::fetch() {
     return data_; // return const reference
 }
 
-BasicRanges::Status BasicRanges::status() {
+BasicRanges::Status BasicRanges::status() noexcept {
     if (available_) {
         return AVAILABLE; // data already built
     }
diff --git a/src/klotski_core/all_cases/basic_ranges.h b/src/klotski_core/all_cases/basic_ranges.h
index 18688ea..82eb0d0 100644
--- a/src/klotski_core/all_cases/basic_ranges.h
+++ b/src/klotski_core/all_cases/basic_ranges.h
@@ -49,7 +49,7 @@ public:
     static void build();
 
     /// Get current status of BasicRanges.
-    static Status status();
+    static Status status() noexcept;
 
     /// Blocking access to constructed data.
     static const std::vector<uint32_t>& fetch();