diff --git a/src/rose/catchup.c b/src/rose/catchup.c
index d6e7860c..dba9629e 100644
--- a/src/rose/catchup.c
+++ b/src/rose/catchup.c
@@ -50,9 +50,6 @@ static really_inline
 int roseNfaRunProgram(const struct RoseEngine *rose, struct hs_scratch *scratch,
                       u64a som, u64a offset, ReportID id, const char from_mpv) {
     const u32 program = id;
-    assert(program > 0);
-    assert(program % ROSE_INSTR_MIN_ALIGN == 0);
-
     const size_t match_len = 0; // Unused in this path.
     const char in_anchored = 0;
     const char in_catchup = 1;
diff --git a/src/rose/program_runtime.h b/src/rose/program_runtime.h
index be56bec7..78397070 100644
--- a/src/rose/program_runtime.h
+++ b/src/rose/program_runtime.h
@@ -830,7 +830,7 @@ hwlmcb_rv_t roseRunProgram(const struct RoseEngine *t,
                            char skip_mpv_catchup) {
     DEBUG_PRINTF("program=%u, offsets [%llu,%llu]\n", programOffset, som, end);
 
-    assert(programOffset);
+    assert(programOffset >= sizeof(struct RoseEngine));
     assert(programOffset < t->size);
 
     const char *pc_base = getByOffset(t, programOffset);