diff --git a/src/confparser.c b/src/confparser.c
index b0693ee..f9a71c4 100644
--- a/src/confparser.c
+++ b/src/confparser.c
@@ -289,6 +289,7 @@ static int test_conf_syntax(char *config)
 						sizeof(conf.db.port) - 1);
 			} else {
 				ok = 0;
+				log(ERROR, "Invalid db.type: %s", tmp + 1);
 				failed = 1;
 			}
 		} else if (!strcmp(buf, "db.hostname"))
@@ -308,6 +309,7 @@ static int test_conf_syntax(char *config)
 					}
 				}
 			}
+			log(ERROR, "Invalid db.port value: %s", tmp + 1);
 			ok = 0;
 			failed = 1;
 		} else if (!strcmp(buf, "db.pass"))
@@ -329,6 +331,7 @@ static int test_conf_syntax(char *config)
 					}
 				}
 			}
+			log(ERROR, "Invalid rmps.agent_port value: %s", tmp + 1);
 			ok = 0;
 			failed = 1;
 		} else if (!strcmp(buf, "rmps.client_ip")) {
@@ -347,6 +350,7 @@ static int test_conf_syntax(char *config)
 					}
 				}
 			}
+			log(ERROR, "Invalid rmps.client_port value: %s", tmp + 1);
 			ok = 0;
 			failed = 1;
 		} else if (!strcmp(buf, "rmps.logfile")) {
@@ -368,8 +372,10 @@ static int test_conf_syntax(char *config)
 			if (strlen(tmp + 1) == 1 &&
 				(tmp[1] > '0' && tmp[1] < '5'))
 				conf.rmps.loglevel = tmp[1] - '0';
-			else
+			else {
+				log(ERROR, "Invalid loglevel: %s", tmp + 1);
 				failed = 1;
+			}
 		} else if (!strcmp(buf, "rmps.agent_tls_crt")) {
 			if (access(tmp + 1, F_OK) == -1) {
 				log(ERROR, "%s is missing", tmp + 1);
@@ -427,10 +433,11 @@ static int test_conf_syntax(char *config)
 				strncpy(conf.rmps.client_tls_key,
 					tmp + 1,
 					sizeof(conf.rmps.client_tls_key) - 1);
-		} else
+		} else {
 			log(ERROR, "Unknown config entry on line %d: %s",
 				j, buf);
-				failed = 1;
+			failed = 1;
+		}
 		if (!ok) {
 			log(ERROR,
 				"Invalid value for \"%s\", line %d: \"%s\"",