diff --git a/examples/bench.wasm/CMakeLists.txt b/examples/bench.wasm/CMakeLists.txt
index 5e9f68d2e4f..8e134aa38ce 100644
--- a/examples/bench.wasm/CMakeLists.txt
+++ b/examples/bench.wasm/CMakeLists.txt
@@ -35,7 +35,7 @@ set_target_properties(${TARGET} PROPERTIES LINK_FLAGS " \
     -s INITIAL_MEMORY=2000MB \
     -s TOTAL_MEMORY=2000MB \
     -s FORCE_FILESYSTEM=1 \
-    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap']\" \
+    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap', 'HEAPU8']\" \
     ${EXTRA_FLAGS} \
     ")
 
diff --git a/examples/wchess/wchess.wasm/CMakeLists.txt b/examples/wchess/wchess.wasm/CMakeLists.txt
index 60967b19d68..0d3dd908a1c 100644
--- a/examples/wchess/wchess.wasm/CMakeLists.txt
+++ b/examples/wchess/wchess.wasm/CMakeLists.txt
@@ -32,7 +32,7 @@ set_target_properties(${TARGET} PROPERTIES LINK_FLAGS " \
     -s INITIAL_MEMORY=1024MB \
     -s TOTAL_MEMORY=1024MB \
     -s FORCE_FILESYSTEM=1 \
-    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap']\" \
+    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap', 'HEAPU8']]\" \
     ${EXTRA_FLAGS} \
     ")