diff --git a/pallets/gear/src/schedule.rs b/pallets/gear/src/schedule.rs
index b2010a58961..d6ebd0928af 100644
--- a/pallets/gear/src/schedule.rs
+++ b/pallets/gear/src/schedule.rs
@@ -737,7 +737,8 @@ impl Default for Limits {
             // To avoid potential stack overflow problems we have a panic in sandbox in case,
             // execution is ended with stack overflow error. So, process queue execution will be
             // stopped and we will be able to investigate the problem and decrease this constant if needed.
-            stack_height: Some(20_000),
+            // TODO #3435. Disabled stack height is a temp solution.
+            stack_height: cfg!(not(feature = "fuzz")).then_some(20_000),
             globals: 256,
             locals: 1024,
             parameters: 128,
diff --git a/scripts/src/test.sh b/scripts/src/test.sh
index 19a637876d3..b2550519a29 100755
--- a/scripts/src/test.sh
+++ b/scripts/src/test.sh
@@ -86,7 +86,7 @@ run_fuzzer() {
   cd $ROOT_DIR/utils/runtime-fuzzer
 
   if [ "$3" = "wlogs" ]; then
-    LOG_TARGETS="debug,syscalls,gear_wasm_gen=trace,runtime_fuzzer=trace,gear_core_backend=trace"
+    LOG_TARGETS="debug,syscalls,runtime::sandbox=trace,gear_wasm_gen=trace,runtime_fuzzer=trace,gear_core_backend=trace"
   else
     LOG_TARGETS="off"
   fi