diff --git a/cmake/Helper.cmake b/cmake/Helper.cmake
index fc8890349..66b65e54d 100644
--- a/cmake/Helper.cmake
+++ b/cmake/Helper.cmake
@@ -217,7 +217,7 @@ FUNCTION(ADD_PLATFORM_LIBRARY _name)
 		ENDIF()
 	ENDFOREACH()
 
-	ADD_LIBRARY(${_name} ${FILES})
+	ADD_LIBRARY(${_name} STATIC ${FILES})
 	TARGET_INCLUDE_DIRECTORIES(${_name} INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
 	IF(IOS)
 		SET_TARGET_PROPERTIES(${_name} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
diff --git a/src/external/CMakeLists.txt b/src/external/CMakeLists.txt
index 361090ff7..10576d93b 100644
--- a/src/external/CMakeLists.txt
+++ b/src/external/CMakeLists.txt
@@ -48,7 +48,7 @@ IF(HTTP_PARSER_FOUND)
 ELSE()
 	SET(HTTP_PARSER_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/http_parser")
 	FILE(GLOB_RECURSE EXTERNAL_HTTP_PARSER_FILES ${HTTP_PARSER_INCLUDE_DIR}/*.cpp)
-	ADD_LIBRARY(AusweisAppExternalHttpParser ${EXTERNAL_HTTP_PARSER_FILES})
+	ADD_LIBRARY(AusweisAppExternalHttpParser STATIC ${EXTERNAL_HTTP_PARSER_FILES})
 	TARGET_INCLUDE_DIRECTORIES(AusweisAppExternalHttpParser INTERFACE "$<BUILD_INTERFACE:${HTTP_PARSER_INCLUDE_DIR}>")
 
 	IF(IOS)