diff --git a/include/vectorwrapper/has_method.hpp b/include/vectorwrapper/has_method.hpp
index 9fc57d2..1c2f4a7 100644
--- a/include/vectorwrapper/has_method.hpp
+++ b/include/vectorwrapper/has_method.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef idFBC29C5127784D35BE62F7BAC16E3687
-#define idFBC29C5127784D35BE62F7BAC16E3687
+#pragma once
 
 #define define_has_method(method_name,pretty_name) \
 	template <typename T> \
@@ -50,5 +49,3 @@
 	public:\
 		enum { value = sizeof(has_enum<T>(nullptr)) == sizeof(TrueType) }; \
 	}
-
-#endif
diff --git a/include/vectorwrapper/sequence_bt.hpp b/include/vectorwrapper/sequence_bt.hpp
index 8ba2cc8..4a753ef 100644
--- a/include/vectorwrapper/sequence_bt.hpp
+++ b/include/vectorwrapper/sequence_bt.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef id4FAEF395B9ED47CB9D6B50B54C9A289A
-#define id4FAEF395B9ED47CB9D6B50B54C9A289A
+#pragma once
 
 #include <cstddef>
 
@@ -57,5 +56,3 @@ namespace vwr {
 #if defined VWR_OUTER_NAMESPACE
 } //namespace VWR_OUTER_NAMESPACE
 #endif
-
-#endif
diff --git a/include/vectorwrapper/size_type.hpp b/include/vectorwrapper/size_type.hpp
index 7e51705..bf8190a 100644
--- a/include/vectorwrapper/size_type.hpp
+++ b/include/vectorwrapper/size_type.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef id85B9A9D5E08C4C97B0E3E69757C6AA54
-#define id85B9A9D5E08C4C97B0E3E69757C6AA54
+#pragma once
 
 #include <cstddef>
 #if defined(VWR_SIZE_TYPE)
@@ -37,5 +36,3 @@ namespace vwr {
 #if defined VWR_OUTER_NAMESPACE
 } //namespace VWR_OUTER_NAMESPACE
 #endif
-
-#endif
diff --git a/include/vectorwrapper/vector_cast.hpp b/include/vectorwrapper/vector_cast.hpp
index 0a79037..e17f127 100644
--- a/include/vectorwrapper/vector_cast.hpp
+++ b/include/vectorwrapper/vector_cast.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef idE24EF7737A7F4882B2BF254F0A3EEC34
-#define idE24EF7737A7F4882B2BF254F0A3EEC34
+#pragma once
 
 #include "vectorwrapper-1.0/sequence_bt.hpp"
 #include "vectorwrapper-1.0/size_type.hpp"
@@ -50,5 +49,3 @@ namespace vwr {
 #if defined VWR_OUTER_NAMESPACE
 } //namespace VWR_OUTER_NAMESPACE
 #endif
-
-#endif
diff --git a/include/vectorwrapper/vectorops.hpp b/include/vectorwrapper/vectorops.hpp
index d0c3424..53ea3d6 100644
--- a/include/vectorwrapper/vectorops.hpp
+++ b/include/vectorwrapper/vectorops.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef id8949C80C36BA42CABC49EA4C1DB54BC7
-#define id8949C80C36BA42CABC49EA4C1DB54BC7
+#pragma once
 
 #include "vectorwrapper-1.0/vectorwrapper.hpp"
 #include "vectorwrapper-1.0/size_type.hpp"
@@ -61,5 +60,3 @@ namespace vwr {
 #if defined VWR_OUTER_NAMESPACE
 } //namespace VWR_OUTER_NAMESPACE
 #endif
-
-#endif
diff --git a/include/vectorwrapper/vectorwrapper.hpp b/include/vectorwrapper/vectorwrapper.hpp
index f4e3b05..ad19c6b 100644
--- a/include/vectorwrapper/vectorwrapper.hpp
+++ b/include/vectorwrapper/vectorwrapper.hpp
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef id1F562E68E5184552A7E8C9270B016692
-#define id1F562E68E5184552A7E8C9270B016692
+#pragma once
 
 #include "vectorwrapper-1.0/has_method.hpp"
 #include "vectorwrapper-1.0/sequence_bt.hpp"
@@ -494,5 +493,3 @@ namespace vwr {
 #endif
 
 #include "vectorwrapper-1.0/vectorwrapper.inl"
-
-#endif