diff --git a/src/audio/eq_iir/eq_iir.c b/src/audio/eq_iir/eq_iir.c
index a7de780ee070..d59258e22514 100644
--- a/src/audio/eq_iir/eq_iir.c
+++ b/src/audio/eq_iir/eq_iir.c
@@ -325,6 +325,7 @@ void eq_iir_pass(struct processing_module *mod, const struct cir_buf_source *sou
 	const uint8_t *src = source->ptr;
 	uint8_t *dst = sink->ptr;
 	size_t bytes = frames * cd->frame_bytes;
+	int ret;
 
 	while (bytes) {
 		size_t src_contiguous = (const uint8_t *)source->buf_end - src;
@@ -337,7 +338,8 @@ void eq_iir_pass(struct processing_module *mod, const struct cir_buf_source *sou
 			continue;
 		}
 
-		assert(!memcpy_s(dst, dst_contiguous, src, copy));
+		ret = memcpy_s(dst, dst_contiguous, src, copy);
+		assert(!ret);
 		bytes -= copy;
 		src = source_cir_buf_wrap(src + copy, source->buf_start, source->buf_end);
 		dst = cir_buf_wrap(dst + copy, sink->buf_start, sink->buf_end);
diff --git a/src/audio/eq_iir/eq_iir_ipc3.c b/src/audio/eq_iir/eq_iir_ipc3.c
index e8e0b3d02965..ef5c33497ff1 100644
--- a/src/audio/eq_iir/eq_iir_ipc3.c
+++ b/src/audio/eq_iir/eq_iir_ipc3.c
@@ -151,8 +151,8 @@ static void eq_iir_s32_s16_pass(struct processing_module *mod,
 			y++;
 		}
 		remaining_samples -= n;
-		x = source_cir_buf_wrap(x + n, source->buf_start, source->buf_end);
-		y = cir_buf_wrap(y + n, sink->buf_start, sink->buf_end);
+		x = source_cir_buf_wrap(x, source->buf_start, source->buf_end);
+		y = cir_buf_wrap(y, sink->buf_start, sink->buf_end);
 	}
 }
 #endif /* CONFIG_FORMAT_S16LE && CONFIG_FORMAT_S32LE */
@@ -181,8 +181,8 @@ static void eq_iir_s32_s24_pass(struct processing_module *mod,
 			y++;
 		}
 		remaining_samples -= n;
-		x = source_cir_buf_wrap(x + n, source->buf_start, source->buf_end);
-		y = cir_buf_wrap(y + n, sink->buf_start, sink->buf_end);
+		x = source_cir_buf_wrap(x, source->buf_start, source->buf_end);
+		y = cir_buf_wrap(y, sink->buf_start, sink->buf_end);
 	}
 }
 #endif /* CONFIG_FORMAT_S24LE && CONFIG_FORMAT_S32LE */