diff --git a/iceprog/iceprog.c b/iceprog/iceprog.c
index d86e874b4d..8737f75262 100644
--- a/iceprog/iceprog.c
+++ b/iceprog/iceprog.c
@@ -1009,6 +1009,7 @@ int main(int argc, char **argv)
 						break;
 					fprintf(stderr, "                      \r");
 					fprintf(stderr, "addr 0x%06X %3ld%%\r", rw_offset + addr, 100 * addr / file_size);
+					fflush(stderr);
 					flash_write_enable();
 					flash_prog(rw_offset + addr, buffer, rc);
 					flash_wait();
@@ -1031,6 +1032,7 @@ int main(int argc, char **argv)
 				uint8_t buffer[256];
 				fprintf(stderr, "                      \r");
 				fprintf(stderr, "addr 0x%06X %3d%%\r", rw_offset + addr, 100 * addr / read_size);
+				fflush(stderr);
 				flash_read(rw_offset + addr, buffer, 256);
 				fwrite(buffer, read_size - addr > 256 ? 256 : read_size - addr, 1, f);
 			}
@@ -1045,6 +1047,7 @@ int main(int argc, char **argv)
 					break;
 				fprintf(stderr, "                      \r");
 				fprintf(stderr, "addr 0x%06X %3ld%%\r", rw_offset + addr, 100 * addr / file_size);
+				fflush(stderr);
 				flash_read(rw_offset + addr, buffer_flash, rc);
 				if (memcmp(buffer_file, buffer_flash, rc)) {
 					fprintf(stderr, "Found difference between flash and file!\n");