diff --git a/classes/populate_sdk_qt6_base.bbclass b/classes/populate_sdk_qt6_base.bbclass
index 5cee736..dcc1be1 100644
--- a/classes/populate_sdk_qt6_base.bbclass
+++ b/classes/populate_sdk_qt6_base.bbclass
@@ -72,6 +72,11 @@ set(ENV{OECORE_NATIVE_SYSROOT} "${SDKPATHNATIVE}")
 set(ENV{OECORE_TARGET_SYSROOT} "${SDKTARGETSYSROOT}")
 set(ENV{SDKTARGETSYSROOT} "${SDKTARGETSYSROOT}")
 
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT 1)
+endif()
+set(CMAKE_INSTALL_PREFIX "${prefix}" CACHE PATH "Install path prefix")
+
 set(CMAKE_TOOLCHAIN_FILE "${SDKPATHNATIVE}/usr/share/cmake/OEToolchainConfig.cmake")
 include("\${CMAKE_TOOLCHAIN_FILE}")
 EOF