diff --git a/.github/workflows/builds.yml b/.github/workflows/builds.yml
index 42932166cd..a8f24b7600 100644
--- a/.github/workflows/builds.yml
+++ b/.github/workflows/builds.yml
@@ -1419,9 +1419,9 @@ jobs:
       - run: make install-headers
       - run: make install-library
 
-      - run: TZ="UTC" ./src/suricata -u -U LogCustomFormatTest01
-      - run: TZ="Brazil/East" ./src/suricata -u -U LogCustomFormatTest01
-      - run: TZ="Saskatchewan/Regina" ./src/suricata -u -U LogCustomFormatTest01
+      - run: TZ="UTC" ./src/suricata -u -U CreateFormattedTimeStringTest01
+      - run: TZ="Brazil/East" ./src/suricata -u -U CreateFormattedTimeStringTest01
+      - run: TZ="Saskatchewan/Regina" ./src/suricata -u -U CreateFormattedTimeStringTest01
 
   ubuntu-24-04-rust-vars:
     name: Ubuntu 24.04 (RUSTC+CARGO vars)
diff --git a/src/log-cf-common.c b/src/log-cf-common.c
index fe46c1ac3b..98b6989c62 100644
--- a/src/log-cf-common.c
+++ b/src/log-cf-common.c
@@ -27,7 +27,6 @@
 
 #include "log-cf-common.h"
 #include "util-print.h"
-#include "util-unittest.h"
 #include "util-time.h"
 #include "util-debug.h"
 
@@ -226,53 +225,6 @@ void LogCustomFormatWriteTimestamp(MemBuffer *buffer, const char *fmt, const SCT
                    buffer->size, (uint8_t *)buf,strlen(buf));
 }
 
-#ifdef UNITTESTS
-/**
- * \internal
- * \brief This test tests default timestamp format
- */
-static int LogCustomFormatTest01(void)
-{
-    // strftime which underpins LogCustomFormatWriteTimestamp doesn't
-    // seem to function properly on MinGW
-#ifndef __MINGW32__
-    struct tm tm;
-    tm.tm_sec = 0;
-    tm.tm_min = 30;
-    tm.tm_hour = 4;
-    tm.tm_mday = 13;
-    tm.tm_mon = 0;
-    tm.tm_year = 114;
-    tm.tm_wday = 1;
-    tm.tm_yday = 13;
-    tm.tm_isdst = -1;
-    SCTime_t ts = SCTIME_FROM_SECS(mktime(&tm));
-
-    MemBuffer *buffer = MemBufferCreateNew(62);
-    FAIL_IF_NULL(buffer);
-
-    LogCustomFormatWriteTimestamp(buffer, "", ts);
-    /*
-     * {buffer = "01/13/14-04:30:00", size = 62, offset = 17}
-     */
-    FAIL_IF_NOT( buffer->offset == 17);
-    FAIL_IF_NOT(buffer->size == 62);
-    FAIL_IF(strcmp((char *)buffer->buffer, "01/13/14-04:30:00") != 0);
-
-    MemBufferFree(buffer);
-#endif
-    PASS;
-}
-
-static void LogCustomFormatRegisterTests(void)
-{
-    UtRegisterTest("LogCustomFormatTest01", LogCustomFormatTest01);
-}
-#endif /* UNITTESTS */
-
 void LogCustomFormatRegister(void)
 {
-#ifdef UNITTESTS
-    LogCustomFormatRegisterTests();
-#endif /* UNITTESTS */
 }
diff --git a/src/runmode-unittests.c b/src/runmode-unittests.c
index 3feef59753..4ce39159d9 100644
--- a/src/runmode-unittests.c
+++ b/src/runmode-unittests.c
@@ -135,6 +135,7 @@ void TmqhSetup (void);
 static void RegisterUnittests(void)
 {
     UTHRegisterTests();
+    SCTimeRegisterTests();
     StreamTcpRegisterTests();
     SigRegisterTests();
     SCReputationRegisterTests();
diff --git a/src/util-time.c b/src/util-time.c
index ff8b5c6544..e05fba5dcf 100644
--- a/src/util-time.c
+++ b/src/util-time.c
@@ -65,6 +65,7 @@
 #include "tm-threads.h"
 #include "util-debug.h"
 #include "util-time.h"
+#include "util-unittest.h"
 
 #ifdef UNITTESTS
 static struct timeval current_time = { 0, 0 };
@@ -651,3 +652,42 @@ uint64_t TimeDifferenceMicros(struct timeval t0, struct timeval t1)
 {
     return (uint64_t)(t1.tv_sec - t0.tv_sec) * 1000000L + (t1.tv_usec - t0.tv_usec);
 }
+
+#ifdef UNITTESTS
+static int CreateFormattedTimeStringTest01(void)
+{
+    /* strftime, which underpins CreateFormattedTimeString, does not seem to
+     * function properly on MinGW. */
+#ifndef __MINGW32__
+    struct tm tm;
+    tm.tm_sec = 0;
+    tm.tm_min = 30;
+    tm.tm_hour = 4;
+    tm.tm_mday = 13;
+    tm.tm_mon = 0;
+    tm.tm_year = 114;
+    tm.tm_wday = 1;
+    tm.tm_yday = 13;
+    tm.tm_isdst = -1;
+
+    /* mktime() interprets the broken-down time as local time and SCLocalTime()
+     * converts it back, so the result is independent of the active timezone.
+     * The CI runs this test under several timezones to guard that round trip. */
+    struct tm local_tm;
+    struct tm *t = SCLocalTime(mktime(&tm), &local_tm);
+
+    char buf[128] = { 0 };
+    CreateFormattedTimeString(t, "%m/%d/%y-%H:%M:%S", buf, sizeof(buf));
+
+    FAIL_IF(strcmp(buf, "01/13/14-04:30:00") != 0);
+#endif
+    PASS;
+}
+#endif /* UNITTESTS */
+
+void SCTimeRegisterTests(void)
+{
+#ifdef UNITTESTS
+    UtRegisterTest("CreateFormattedTimeStringTest01", CreateFormattedTimeStringTest01);
+#endif
+}
diff --git a/src/util-time.h b/src/util-time.h
index d978b5d5a7..a9dec3adac 100644
--- a/src/util-time.h
+++ b/src/util-time.h
@@ -161,4 +161,6 @@ uint64_t SCGetSecondsUntil (const char *str, time_t epoch);
 uint64_t SCTimespecAsEpochMillis(const struct timespec *ts);
 uint64_t TimeDifferenceMicros(struct timeval t0, struct timeval t1);
 
+void SCTimeRegisterTests(void);
+
 #endif /* SURICATA_UTIL_TIME_H */