diff --git a/tests/test_BuildInfo.cpp b/tests/test_BuildInfo.cpp
index 36c8c79aac7c150764512dadab9306438b4432db..335cc74e420122f61a59067c0df89e416e55c2ba 100644
--- a/tests/test_BuildInfo.cpp
+++ b/tests/test_BuildInfo.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_BUILD_INFO_HPP
-#define TEST_BUILD_INFO_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/BuildInfo.hpp>
@@ -66,5 +63,3 @@ TEST_CASE("BuildInfo", "[utils]")
 #endif   // PUGS_HAS_PETSC
   }
 }
-
-#endif   // TEST_BUILD_INFO_HPP
diff --git a/tests/test_CRSGraph.cpp b/tests/test_CRSGraph.cpp
index 1759dd213ba9cfa90915410cb9549a1be0be7a67..5c2fc7f287249468886f557d30bbb5740216f114 100644
--- a/tests/test_CRSGraph.cpp
+++ b/tests/test_CRSGraph.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_CRS_GRAPH_HPP
-#define TEST_CRS_GRAPH_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/CRSGraph.hpp>
@@ -40,5 +37,3 @@ TEST_CASE("CRSGraph", "[utils]")
   REQUIRE(neighbors.size() == graph.neighbors().size());
   REQUIRE(&neighbors[0] == &graph.neighbors()[0]);
 }
-
-#endif   // TEST_CRS_GRAPH_HPP
diff --git a/tests/test_CastArray.cpp b/tests/test_CastArray.cpp
index ea3899ce84c95fa70f6a301cc7e1ec2eb701eb51..6a014045cfaf19a039dcaf0be97edaa81bea8522 100644
--- a/tests/test_CastArray.cpp
+++ b/tests/test_CastArray.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_CAST_ARRAY_HPP
-#define TEST_CAST_ARRAY_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/ArrayUtils.hpp>
@@ -89,5 +86,3 @@ TEST_CASE("CastArray", "[utils]")
     }
   }
 }
-
-#endif   // TEST_CAST_ARRAY_HPP
diff --git a/tests/test_ConsoleManager.cpp b/tests/test_ConsoleManager.cpp
index 2661852186f6d4bafd89b2f58d5f59b9b3fd0927..4387d7042065df80406ba3ba1c06ba44ec3f9e97 100644
--- a/tests/test_ConsoleManager.cpp
+++ b/tests/test_ConsoleManager.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_CONSOLE_MANAGER_HPP
-#define TEST_CONSOLE_MANAGER_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/ConsoleManager.hpp>
@@ -33,5 +30,3 @@ TEST_CASE("ConsoleManager", "[utils]")
     rang::setControlMode(saved_control);
   }
 }
-
-#endif   // TEST_CONSOLE_MANAGER_HPP
diff --git a/tests/test_Demangle.cpp b/tests/test_Demangle.cpp
index 057bf9db93e42dc3115e7d7619ef887109dfd21a..a3489fd2d629fe835e3ce247a8ac8008bb06ff9d 100644
--- a/tests/test_Demangle.cpp
+++ b/tests/test_Demangle.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_DEMANGLE_HPP
-#define TEST_DEMANGLE_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/Demangle.hpp>
@@ -38,5 +35,3 @@ TEST_CASE("Demangle", "[utils]")
     REQUIRE((std::string{"not_mangled"} == demangle("not_mangled")));
   }
 }
-
-#endif   // TEST_DEMANGLE_HPP
diff --git a/tests/test_EscapedString.cpp b/tests/test_EscapedString.cpp
index 925ebadbda1f8851d7d2ee208bbaa619b8dd435b..3dca01496813ca51e6b52afd1be3c446bc7df54b 100644
--- a/tests/test_EscapedString.cpp
+++ b/tests/test_EscapedString.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_ESCAPED_STRING_HPP
-#define TEST_ESCAPED_STRING_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/EscapedString.hpp>
@@ -23,5 +20,3 @@ TEST_CASE("EscapedString", "[utils]")
     REQUIRE(unescapeString(s) == std::string{"foo\'\\\"\?\a\b\f\n\r\t\vbar"});
   }
 }
-
-#endif   // TEST_ESCAPED_STRING_HPP
diff --git a/tests/test_Exceptions.cpp b/tests/test_Exceptions.cpp
index 720bd40ea73cfa529b90018fcc2fdcdd12c2603d..25b181ae165aef26cd25942cc52741a2606b50ac 100644
--- a/tests/test_Exceptions.cpp
+++ b/tests/test_Exceptions.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_EXCEPTIONS_HPP
-#define TEST_EXCEPTIONS_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/Exceptions.hpp>
@@ -21,5 +18,3 @@ TEST_CASE("Exceptions", "[utils]")
     REQUIRE(std::string{not_implemented_error.what()} == "not implemented yet: not implemented error");
   }
 }
-
-#endif   // TEST_EXCEPTIONS_HPP
diff --git a/tests/test_Partitioner.cpp b/tests/test_Partitioner.cpp
index f40663976571587b42bcdbf618e93de3e1827415..9af1fc6c6f24be33aa5363696f36cab5909e6e7d 100644
--- a/tests/test_Partitioner.cpp
+++ b/tests/test_Partitioner.cpp
@@ -1,6 +1,3 @@
-#ifndef TEST_PARTITIONER_HPP
-#define TEST_PARTITIONER_HPP
-
 #include <catch2/catch.hpp>
 
 #include <utils/Messenger.hpp>
@@ -87,5 +84,3 @@ TEST_CASE("Partitioner", "[utils]")
     }
   }
 }
-
-#endif   // TEST_PARTITIONER_HPP