diff --git a/Crypto/CMakeLists.txt b/Crypto/CMakeLists.txt
index 274fe185c..529443d22 100644
--- a/Crypto/CMakeLists.txt
+++ b/Crypto/CMakeLists.txt
@@ -29,9 +29,9 @@ target_include_directories( "${LIBNAME}"
     PUBLIC
         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
         $<INSTALL_INTERFACE:include>
+        ${OPENSSL_INCLUDE_DIR}
     PRIVATE
         ${CMAKE_CURRENT_SOURCE_DIR}/src
-        ${OPENSSL_INCLUDE_DIR}
     )
 target_compile_definitions("${LIBNAME}" PUBLIC ${LIB_MODE_DEFINITIONS})
 
diff --git a/Crypto/include/Poco/Crypto/CryptoException.h b/Crypto/include/Poco/Crypto/CryptoException.h
index 93a05a985..34c15111e 100644
--- a/Crypto/include/Poco/Crypto/CryptoException.h
+++ b/Crypto/include/Poco/Crypto/CryptoException.h
@@ -21,7 +21,6 @@
 
 #include "Poco/Crypto/Crypto.h"
 #include "Poco/Exception.h"
-#include <openssl/err.h>
 
 
 namespace Poco {
diff --git a/Crypto/src/CryptoException.cpp b/Crypto/src/CryptoException.cpp
index b9770bb71..31ebf6b8d 100644
--- a/Crypto/src/CryptoException.cpp
+++ b/Crypto/src/CryptoException.cpp
@@ -16,6 +16,7 @@
 #include "Poco/Crypto/CryptoException.h"
 #include "Poco/NumberFormatter.h"
 #include <typeinfo>
+#include <openssl/err.h>
 
 
 namespace Poco {