diff --git a/ports/rp2/main.c b/ports/rp2/main.c
index d976464de1cc5..1062236a3916b 100644
--- a/ports/rp2/main.c
+++ b/ports/rp2/main.c
@@ -66,7 +66,7 @@
#endif
extern uint8_t __StackTop, __StackBottom;
-static char gc_heap[MICROPY_GC_HEAP_SIZE];
+__attribute__((section(".uninitialized_bss"))) static char gc_heap[MICROPY_GC_HEAP_SIZE];
// Embed version info in the binary in machine readable form
bi_decl(bi_program_version_string(MICROPY_GIT_TAG));
diff --git a/ports/rp2/memmap_mp.ld b/ports/rp2/memmap_mp.ld
index 0dc96743ea5cb..82f9cb01c3eff 100644
--- a/ports/rp2/memmap_mp.ld
+++ b/ports/rp2/memmap_mp.ld
@@ -180,6 +180,12 @@ SECTIONS
*(.uninitialized_data*)
} > RAM
+ /* bss without zero init on startup */
+ .uninitialized_bss (NOLOAD): {
+ . = ALIGN(4);
+ *(.uninitialized_bss*)
+ } > RAM
+
/* Start and end symbols must be word-aligned */
.scratch_x : {
__scratch_x_start__ = .;
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