diff --git a/share/CMakeLists.txt b/share/CMakeLists.txt
index 6fcf96392..58c575c90 100644
--- a/share/CMakeLists.txt
+++ b/share/CMakeLists.txt
@@ -22,17 +22,12 @@
 
 if(APPLE)
 	find_program(OPENSSL_PROGRAM openssl)
-	find_program(SED_PROGRAM sed)
 	execute_process(
 		COMMAND ${OPENSSL_PROGRAM} version -d
 		OUTPUT_VARIABLE OPENSSL_VERSION
 		OUTPUT_STRIP_TRAILING_WHITESPACE
 	)
-	execute_process(
-		COMMAND ${SED_PROGRAM} "s/OPENSSLDIR: \"\(.*\)\"/\1/" "${OPENSSL_VERSION}"
-		OUTPUT_VARIABLE HTTPS_CA_DIR
-		OUTPUT_STRIP_TRAILING_WHITESPACE
-	)
+	string(REGEX REPLACE "OPENSSLDIR: \"(.*)\"" "\\1" HTTPS_CA_DIR "${OPENSSL_VERSION}")
 endif()
 
 execute_process(COMMAND ${CMAKE_COMMAND} -DHTTPS_CA_DIR=${HTTPS_CA_DIR} -DWORK_DIR=${CMAKE_CURRENT_SOURCE_DIR} -DOUTPUT_DIR=${CMAKE_CURRENT_BINARY_DIR} -P ${CMAKE_CURRENT_SOURCE_DIR}/rootca.cmake)