diff --git a/aegisub/configure.in b/aegisub/configure.in
index 5d8074ef8..7bb087767 100644
--- a/aegisub/configure.in
+++ b/aegisub/configure.in
@@ -256,7 +256,6 @@ AS_IF([test x$agi_cv_pragma_once = xno],
 AC_CHECK_HEADER([wchar.h],,[AC_MSG_FAILURE([aegisub requires wide character support])])
 
 AC_CHECK_HEADERS([sys/time.h])
-AC_CHECK_SIZEOF([time_t])
 
 ##############################
 # Program Support and Features
diff --git a/aegisub/libaegisub/common/cajun/elements.cpp b/aegisub/libaegisub/common/cajun/elements.cpp
index 9473113ca..a3a95fef6 100644
--- a/aegisub/libaegisub/common/cajun/elements.cpp
+++ b/aegisub/libaegisub/common/cajun/elements.cpp
@@ -90,10 +90,6 @@ UnknownElement::UnknownElement() :                              m_pImp(new Imp_T
 UnknownElement::UnknownElement(const UnknownElement& unknown) : m_pImp(unknown.m_pImp->Clone()) {}
 UnknownElement::UnknownElement(int number) :                    m_pImp(new Imp_T<Integer>(number)) {}
 UnknownElement::UnknownElement(const char *string) :            m_pImp(new Imp_T<String>(string)) {}
-#if SIZEOF_TIME_T+0 == 4
-UnknownElement::UnknownElement(time_t number) :                 m_pImp(new Imp_T<Integer>(number)) {}
-#endif
-
 UnknownElement::~UnknownElement() { delete m_pImp; }
 
 #define DEFINE_UE_TYPE(Type) \
diff --git a/aegisub/libaegisub/common/log.cpp b/aegisub/libaegisub/common/log.cpp
index 99e1681de..daafda2ef 100644
--- a/aegisub/libaegisub/common/log.cpp
+++ b/aegisub/libaegisub/common/log.cpp
@@ -132,8 +132,8 @@ JsonEmitter::~JsonEmitter() {
 	Sink const& sink = *log_sink->GetSink();
 	for (unsigned int i=0; i < sink.size(); i++) {
 		json::Object entry;
-		entry["sec"]      = sink[i]->tv.tv_sec;
-		entry["usec"]     = sink[i]->tv.tv_usec;
+		entry["sec"]      = (int64_t)sink[i]->tv.tv_sec;
+		entry["usec"]     = (int64_t)sink[i]->tv.tv_usec;
 		entry["severity"] = sink[i]->severity;
 		entry["section"]  = sink[i]->section;
 		entry["file"]     = sink[i]->file;
@@ -145,12 +145,12 @@ JsonEmitter::~JsonEmitter() {
 	}
 
 	json::Array &timeval_open = root["timeval"]["open"];
-	timeval_open.push_back(time_start.tv_sec);
-	timeval_open.push_back(time_start.tv_usec);
+	timeval_open.push_back((int64_t)time_start.tv_sec);
+	timeval_open.push_back((int64_t)time_start.tv_usec);
 
 	json::Array &timeval_close = root["timeval"]["close"];
-	timeval_close.push_back(time_close.tv_sec);
-	timeval_close.push_back(time_close.tv_usec);
+	timeval_close.push_back((int64_t)time_close.tv_sec);
+	timeval_close.push_back((int64_t)time_close.tv_usec);
 
 	std::stringstream str;
 	str << directory << time_start.tv_sec << ".json";
diff --git a/aegisub/libaegisub/include/libaegisub/cajun/elements.h b/aegisub/libaegisub/include/libaegisub/cajun/elements.h
index 6b790a881..ed332e676 100644
--- a/aegisub/libaegisub/include/libaegisub/cajun/elements.h
+++ b/aegisub/libaegisub/include/libaegisub/cajun/elements.h
@@ -77,10 +77,6 @@ public:
    UnknownElement(const String& string);
    UnknownElement(const Null& null);
 
-#if SIZEOF_TIME_T+0 == 4
-      UnknownElement(time_t number);
-#endif
-
    ~UnknownElement();
 
    UnknownElement& operator = (const UnknownElement& unknown);