diff --git a/warc-dump-responses.c b/warc-dump-responses.c
index a9e1275..3dd7a9e 100644
--- a/warc-dump-responses.c
+++ b/warc-dump-responses.c
@@ -42,49 +42,49 @@ checkstate:
 		DEBUG_PRINTF("State: %d\n", state);
 		if (state == STATE_BEFORE_RECORD) {
 			if (n < 10) {
-				fprintf(stderr, "Error: too little data before WARC headers");
+				fprintf(stderr, "Error: too little data before WARC headers\n");
 				return 1;
 			}
 			if (memcmp(buf, "WARC/1.0\r\n", 10) == 0 || memcmp(buf, "WARC/1.1\r\n", 10) == 0) {
 				// Got some headers; find the record type, content length, and end of headers
 				m0 = memmem(buf, n, "\r\nContent-Length:", 17);
 				if (!m0) {
-					fprintf(stderr, "Error: Content-Length missing");
+					fprintf(stderr, "Error: Content-Length missing\n");
 					return 1;
 				}
 				DEBUG_PRINTF("Found Content-Length header at %p (offset %zu)\n", (void*)(m0 + 2), m0 + 2 - buf);
 				m1 = memmem(m0 + 1, n - (m0 + 1 - buf), "\r\n", 2);
 				if (!m1) {
-					fprintf(stderr, "Error: CRLF after Content-Length missing");
+					fprintf(stderr, "Error: CRLF after Content-Length missing\n");
 					return 1;
 				}
 				m0 += 17;
 				while (m0 < buf + n && (*m0 == ' ' || *m0 == '\t')) ++m0;
 				if (!sscanf(m0, "%zu%n", &record_length, &nscan)) {
-					fprintf(stderr, "Error: invalid Content-Length");
+					fprintf(stderr, "Error: invalid Content-Length\n");
 					return 1;
 				}
 				if (nscan > n - (m0 - buf)) {
-					fprintf(stderr, "Error: buffer overread");
+					fprintf(stderr, "Error: buffer overread\n");
 					return 1;
 				}
 				m0 += nscan;
 				while (m0 < buf + n && (*m0 == ' ' || *m0 == '\t')) ++m0;
 				if (m0 != m1) {
-					fprintf(stderr, "Error: invalid Content-Length (noise before EOL)");
+					fprintf(stderr, "Error: invalid Content-Length (noise before EOL)\n");
 					return 1;
 				}
 				DEBUG_PRINTF("Record body length: %zu\n", record_length);
 
 				m0 = memmem(buf, n, "\r\nWARC-Type:", 12);
 				if (!m0) {
-					fprintf(stderr, "Error: WARC-Type missing");
+					fprintf(stderr, "Error: WARC-Type missing\n");
 					return 1;
 				}
 				DEBUG_PRINTF("Found WARC-Type header at %p (offset %zu)\n", (void*)(m0 + 2), m0 + 2 - buf);
 				m1 = memmem(m0, n - (m0 - buf), "\r\n", 2);
 				if (!m1) {
-					fprintf(stderr, "Error: CRLF after WARC-Type missing");
+					fprintf(stderr, "Error: CRLF after WARC-Type missing\n");
 					return 1;
 				}
 				m0 += 12;
@@ -99,7 +99,7 @@ checkstate:
 
 				m0 = memmem(buf, n, "\r\n\r\n", 4);
 				if (!m0) {
-					fprintf(stderr, "Error: end of headers not found");
+					fprintf(stderr, "Error: end of headers not found\n");
 					return 1;
 				}
 				m0 += 4;
@@ -163,7 +163,7 @@ checkstate:
 					fprintf(stdout, "\n");
 				}
 				if (memcmp(buf + record_length - record_bytes_read, "\r\n\r\n", 4) != 0) {
-					fprintf(stderr, "Error: end of block not found");
+					fprintf(stderr, "Error: end of block not found\n");
 					return 1;
 				}
 				DEBUG_PRINTF("Moving %zu bytes backwards by %zu\n", n - (record_length + 4 - record_bytes_read), record_length + 4 - record_bytes_read);