diff --git a/src/modules/alsa/alsa-ucm.c b/src/modules/alsa/alsa-ucm.c
index d2d3ee1eb..341c8012e 100644
--- a/src/modules/alsa/alsa-ucm.c
+++ b/src/modules/alsa/alsa-ucm.c
@@ -801,7 +801,7 @@ static int ucm_port_contains(const char *port_name, const char *dev_name, bool i
     int ret = 0;
     const char *r;
     const char *state = NULL;
-    int len;
+    size_t len;
 
     if (!port_name || !dev_name)
         return false;
diff --git a/src/pulsecore/core-util.c b/src/pulsecore/core-util.c
index 83782bdcc..51a9d276f 100644
--- a/src/pulsecore/core-util.c
+++ b/src/pulsecore/core-util.c
@@ -924,7 +924,7 @@ char *pa_split(const char *c, const char *delimiter, const char**state) {
  * as-is without the length parameter, since it is merely pointing to a point
  * within the original string. The variable state points to, should be
  * initialized to NULL before the first call. */
-const char *pa_split_in_place(const char *c, const char *delimiter, int *n, const char**state) {
+const char *pa_split_in_place(const char *c, const char *delimiter, size_t *n, const char**state) {
     const char *current = *state ? *state : c;
     size_t l;
 
@@ -960,7 +960,7 @@ char *pa_split_spaces(const char *c, const char **state) {
 /* Similar to pa_split_spaces, except this returns a string in-place.
    Returned string is generally not NULL-terminated.
    See pa_split_in_place(). */
-const char *pa_split_spaces_in_place(const char *c, int *n, const char **state) {
+const char *pa_split_spaces_in_place(const char *c, size_t *n, const char **state) {
     const char *current = *state ? *state : c;
     size_t l;
 
@@ -2859,7 +2859,7 @@ bool pa_str_in_list(const char *haystack, const char *delimiters, const char *ne
 /* Checks a whitespace-separated list of words in haystack for needle */
 bool pa_str_in_list_spaces(const char *haystack, const char *needle) {
     const char *s;
-    int n;
+    size_t n;
     const char *state = NULL;
 
     if (!haystack || !needle)
diff --git a/src/pulsecore/core-util.h b/src/pulsecore/core-util.h
index 32579739b..cfb9eb22c 100644
--- a/src/pulsecore/core-util.h
+++ b/src/pulsecore/core-util.h
@@ -109,9 +109,9 @@ static inline const char *pa_strna(const char *x) {
 }
 
 char *pa_split(const char *c, const char *delimiters, const char **state);
-const char *pa_split_in_place(const char *c, const char *delimiters, int *n, const char **state);
+const char *pa_split_in_place(const char *c, const char *delimiters, size_t *n, const char **state);
 char *pa_split_spaces(const char *c, const char **state);
-const char *pa_split_spaces_in_place(const char *c, int *n, const char **state);
+const char *pa_split_spaces_in_place(const char *c, size_t *n, const char **state);
 
 char *pa_strip_nl(char *s);
 char *pa_strip(char *s);