diff --git a/core/fsmon.c b/core/fsmon.c
index 8a306783..f02043e6 100644
--- a/core/fsmon.c
+++ b/core/fsmon.c
@@ -38,6 +38,7 @@ void uwsgi_fsmon_setup() {
 		char *space = strchr(copy, ' ');
 		if (!space) {
 			uwsgi_log("[uwsgi-fsmon] invalid syntax: \"%s\"\n", usl->value);
+			free(copy);
 			goto next;			
 		}
 		*space = 0;
diff --git a/core/io.c b/core/io.c
index 8db4d433..fe720098 100644
--- a/core/io.c
+++ b/core/io.c
@@ -364,6 +364,7 @@ static char *uwsgi_scheme_data(char *url, size_t *size, int add_zero) {
 			}
 		}
 	}
+	close(fd);
 
 	return buffer;
 }
diff --git a/core/snmp.c b/core/snmp.c
index b2ed383f..5cc34ff9 100644
--- a/core/snmp.c
+++ b/core/snmp.c
@@ -305,6 +305,7 @@ static uint8_t snmp_int_to_snmp(uint64_t snmp_val, uint8_t oid_type, uint8_t * b
 	uint8_t tlen;
 	int i, j;
 	uint8_t *ptr = (uint8_t *) & snmp_val;
+	int32_t val32 = (int32_t) snmp_val;
 
 	// check for counter, counter64 or gauge
 
@@ -316,7 +317,6 @@ static uint8_t snmp_int_to_snmp(uint64_t snmp_val, uint8_t oid_type, uint8_t * b
 	}
 	else {
 		tlen = 4;
-		int32_t val32 = (int32_t) snmp_val;
 		ptr = (uint8_t *) &val32;
 	}
 
diff --git a/core/utils.c b/core/utils.c
index 2451d368..48071ba8 100644
--- a/core/utils.c
+++ b/core/utils.c
@@ -3419,7 +3419,11 @@ int uwsgi_write_intfile(char *filename, int n) {
 		uwsgi_error_open(filename);
 		exit(1);
 	}
-	if (fprintf(pidfile, "%d\n", n) <= 0 || ferror(pidfile) || fclose(pidfile)) {
+	if (fprintf(pidfile, "%d\n", n) <= 0 || ferror(pidfile)) {
+		fclose(pidfile);
+		return -1;
+	}
+	if (fclose(pidfile)) {
 		return -1;
 	}
 	return 0;
@@ -4228,6 +4232,7 @@ void uwsgi_envdir(char *edir) {
 
 		free(content);
 	}
+	closedir(d);
 }
 
 void uwsgi_envdirs(struct uwsgi_string_list *envdirs) {
diff --git a/plugins/rrdtool/rrdtool.c b/plugins/rrdtool/rrdtool.c
index ff39f8b1..a73eda1c 100644
--- a/plugins/rrdtool/rrdtool.c
+++ b/plugins/rrdtool/rrdtool.c
@@ -104,8 +104,8 @@ static void rrdtool_post_init() {
 					exit(1);
 				}
 				created++;
-				free(filename);
 			}
+			free(filename);
 			um = um->next;
 		}
 		uwsgi_rwunlock(uwsgi.metrics_lock);