diff --git a/sapi/fpm/fpm/fpm_conf.c b/sapi/fpm/fpm/fpm_conf.c
index 34e0480101a65..3198b6a83853f 100644
--- a/sapi/fpm/fpm/fpm_conf.c
+++ b/sapi/fpm/fpm/fpm_conf.c
@@ -947,7 +947,7 @@ static int fpm_conf_process_all_pools() /* {{{ */
 			if (wp->config->slowlog && *wp->config->slowlog) {
 				int fd;
 
-				fd = open(wp->config->slowlog, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
+				fd = open(wp->config->slowlog, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
 
 				if (0 > fd) {
 					zlog(ZLOG_SYSERROR, "Unable to create or open slowlog(%s)", wp->config->slowlog);
diff --git a/sapi/fpm/fpm/fpm_log.c b/sapi/fpm/fpm/fpm_log.c
index 4e1a057db1983..45cc0f427d032 100644
--- a/sapi/fpm/fpm/fpm_log.c
+++ b/sapi/fpm/fpm/fpm_log.c
@@ -42,7 +42,7 @@ int fpm_log_open(int reopen) /* {{{ */
 		}
 		ret = 0;
 		
-		fd = open(wp->config->access_log, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
+		fd = open(wp->config->access_log, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
 		if (0 > fd) {
 			zlog(ZLOG_SYSERROR, "failed to open access log (%s)", wp->config->access_log);
 			return -1;
diff --git a/sapi/fpm/fpm/fpm_php_trace.c b/sapi/fpm/fpm/fpm_php_trace.c
index 925f2de64e93f..cbf92bc322bd6 100644
--- a/sapi/fpm/fpm/fpm_php_trace.c
+++ b/sapi/fpm/fpm/fpm_php_trace.c
@@ -17,6 +17,7 @@
 # include <stdint.h>
 #endif
 #include <unistd.h>
+#include <fcntl.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <errno.h>
@@ -140,10 +141,12 @@ void fpm_php_trace(struct fpm_child_s *child) /* {{{ */
 	TSRMLS_FETCH();
 	fpm_scoreboard_update(0, 0, 0, 0, 0, 0, 1, FPM_SCOREBOARD_ACTION_INC, child->wp->scoreboard);
 	FILE *slowlog;
+	int fd;
 
 	zlog(ZLOG_NOTICE, "about to trace %d", (int) child->pid);
 
-	slowlog = fopen(child->wp->config->slowlog, "a+");
+	fd = open(child->wp->config->slowlog, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+	slowlog = fdopen(fd, "a");
 
 	if (!slowlog) {
 		zlog(ZLOG_SYSERROR, "unable to open slowlog (%s)", child->wp->config->slowlog);
diff --git a/sapi/fpm/fpm/fpm_stdio.c b/sapi/fpm/fpm/fpm_stdio.c
index fcec78435bdf9..692f331cfd6a1 100644
--- a/sapi/fpm/fpm/fpm_stdio.c
+++ b/sapi/fpm/fpm/fpm_stdio.c
@@ -279,7 +279,7 @@ int fpm_stdio_open_error_log(int reopen) /* {{{ */
 	}
 #endif
 
-	fd = open(fpm_global_config.error_log, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
+	fd = open(fpm_global_config.error_log, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
 	if (0 > fd) {
 		zlog(ZLOG_SYSERROR, "failed to open error_log (%s)", fpm_global_config.error_log);
 		return -1;