diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9c53a521f..41a8541f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -235,6 +235,11 @@ target_compile_definitions(${PROJECT_NAME} PRIVATE
 		$<$<BOOL:${WINDOWS_STORE}>:NOCRYPT>
 		$<$<OR:$<BOOL:${MINGW}>,$<BOOL:${MSVC}>>:_USE_MATH_DEFINES>)
 
+if(UNIX AND NOT ANDROID AND NOT APPLE)
+	execute_process(COMMAND getconf PAGESIZE OUTPUT_VARIABLE PAGE_SIZE OUTPUT_STRIP_TRAILING_WHITESPACE)
+	target_compile_definitions(${PROJECT_NAME} PRIVATE PAGE_SIZE=${PAGE_SIZE})
+endif()
+
 if(NOT "${SENTRY_UPLOAD_URL}" STREQUAL "")
 	target_compile_definitions(${PROJECT_NAME} PRIVATE SENTRY_UPLOAD="${SENTRY_UPLOAD_URL}")
 endif()
diff --git a/core/stdclass.h b/core/stdclass.h
index d67901efe..d2e83a78a 100644
--- a/core/stdclass.h
+++ b/core/stdclass.h
@@ -15,7 +15,7 @@
 #undef PAGE_MASK
 #elif defined(__APPLE__) && defined(__aarch64__)
 #define PAGE_SIZE 16384
-#else
+#elif !defined(PAGE_SIZE)
 #define PAGE_SIZE 4096
 #endif
 #ifndef PAGE_MASK