diff --git a/src/hellolog.c b/src/hellolog.c
index 961a6ab..19d1b4c 100644
--- a/src/hellolog.c
+++ b/src/hellolog.c
@@ -31,6 +31,9 @@ int main(int argc, char** argv) {
     log_error("ERROR - Hello %s", "world");
     log_fatal("FATAL - Hello %s", "world");
 
+    // Pre-C99 usage example
+    log_trace3("test 3 args: %s %s", "arg1", "arg2");
+
     fclose(f1);
     fclose(f2);
     fclose(f3);
diff --git a/src/log.h b/src/log.h
index e73fb47..df61e25 100644
--- a/src/log.h
+++ b/src/log.h
@@ -57,6 +57,75 @@ typedef struct {
 typedef void (*log_LogFn)(log_Event *ev);
 typedef void (*log_LockFn)(bool lock, void *udata);
 
+// Pre-C99 compatible definitions - BEGIN
+#define log_internal1(level, file, line, arg1)                                 \
+    do {                                                                       \
+        if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \
+            log_log(level, file, line, arg1);                                  \
+    } while (0)
+
+#define log_internal2(level, file, line, arg1, arg2)                           \
+    do {                                                                       \
+        if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \
+            log_log(level, file, line, arg1, arg2);                            \
+    } while (0)
+
+#define log_internal3(level, file, line, arg1, arg2, arg3)                     \
+    do {                                                                       \
+        if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \
+            log_log(level, file, line, arg1, arg2, arg3);                      \
+    } while (0)
+
+#define log_internal4(level, file, line, arg1, arg2, arg3, arg4)               \
+    do {                                                                       \
+        if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \
+            log_log(level, file, line, arg1, arg2, arg3, arg4);                \
+    } while (0)
+
+#define log_internal5(level, file, line, arg1, arg2, arg3, arg4, arg5)         \
+    do {                                                                       \
+        if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \
+            log_log(level, file, line, arg1, arg2, arg3, arg4, arg5);           \
+    } while (0)
+
+#define log_trace1(arg1)                            log_internal1(LOG_TRACE, __FILE__, __LINE__, arg1);
+#define log_trace2(arg1, arg2)                      log_internal2(LOG_TRACE, __FILE__, __LINE__, arg1, arg2);
+#define log_trace3(arg1, arg2, arg3)                log_internal3(LOG_TRACE, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_trace4(arg1, arg2, arg3, arg4)          log_internal4(LOG_TRACE, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_trace5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_TRACE, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+
+#define log_debug1(arg1)                            log_internal1(LOG_DEBUG, __FILE__, __LINE__, arg1);
+#define log_debug2(arg1, arg2)                      log_internal2(LOG_DEBUG, __FILE__, __LINE__, arg1, arg2);
+#define log_debug3(arg1, arg2, arg3)                log_internal3(LOG_DEBUG, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_debug4(arg1, arg2, arg3, arg4)          log_internal4(LOG_DEBUG, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_debug5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_DEBUG, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+
+#define log_info1(arg1)                            log_internal1(LOG_INFO, __FILE__, __LINE__, arg1);
+#define log_info2(arg1, arg2)                      log_internal2(LOG_INFO, __FILE__, __LINE__, arg1, arg2);
+#define log_info3(arg1, arg2, arg3)                log_internal3(LOG_INFO, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_info4(arg1, arg2, arg3, arg4)          log_internal4(LOG_INFO, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_info5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_INFO, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+
+#define log_warn1(arg1)                            log_internal1(LOG_WARN, __FILE__, __LINE__, arg1);
+#define log_warn2(arg1, arg2)                      log_internal2(LOG_WARN, __FILE__, __LINE__, arg1, arg2);
+#define log_warn3(arg1, arg2, arg3)                log_internal3(LOG_WARN, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_warn4(arg1, arg2, arg3, arg4)          log_internal4(LOG_WARN, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_warn5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_WARN, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+
+#define log_error1(arg1)                            log_internal1(LOG_ERROR, __FILE__, __LINE__, arg1);
+#define log_error2(arg1, arg2)                      log_internal2(LOG_ERROR, __FILE__, __LINE__, arg1, arg2);
+#define log_error3(arg1, arg2, arg3)                log_internal3(LOG_ERROR, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_error4(arg1, arg2, arg3, arg4)          log_internal4(LOG_ERROR, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_error5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_ERROR, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+
+#define log_fatal1(arg1)                            log_internal1(LOG_FATAL, __FILE__, __LINE__, arg1);
+#define log_fatal2(arg1, arg2)                      log_internal2(LOG_FATAL, __FILE__, __LINE__, arg1, arg2);
+#define log_fatal3(arg1, arg2, arg3)                log_internal3(LOG_FATAL, __FILE__, __LINE__, arg1, arg2, arg3);
+#define log_fatal4(arg1, arg2, arg3, arg4)          log_internal4(LOG_FATAL, __FILE__, __LINE__, arg1, arg2, arg3, arg4);
+#define log_fatal5(arg1, arg2, arg3, arg4, arg5)    log_internal5(LOG_FATAL, __FILE__, __LINE__, arg1, arg2, arg3, arg4, arg5);
+// Pre-C99 compatible definitions - END
+
+
 #define log_trace(...)                                                         \
     do {                                                                       \
         if (LOG_TRACE >= RXI_LOGC_DEFAULT_LEVEL)                               \