diff --git a/include/internal/catch_common.cpp b/include/internal/catch_common.cpp
index 0f2f6eb4..7e24afc7 100644
--- a/include/internal/catch_common.cpp
+++ b/include/internal/catch_common.cpp
@@ -15,10 +15,6 @@
 
 namespace Catch {
 
-    SourceLineInfo::SourceLineInfo( char const* _file, std::size_t _line ) noexcept
-    :   file( _file ),
-        line( _line )
-    {}
     bool SourceLineInfo::empty() const noexcept {
         return file[0] == '\0';
     }
@@ -38,7 +34,6 @@ namespace Catch {
         return os;
     }
 
-    bool isTrue( bool value ){ return value; }
     bool alwaysTrue() { return true; }
     bool alwaysFalse() { return false; }
 
diff --git a/include/internal/catch_common.h b/include/internal/catch_common.h
index 617a9343..5b75bc07 100644
--- a/include/internal/catch_common.h
+++ b/include/internal/catch_common.h
@@ -43,7 +43,8 @@ namespace Catch {
     struct SourceLineInfo {
 
         SourceLineInfo() = delete;
-        SourceLineInfo( char const* _file, std::size_t _line ) noexcept;
+        SourceLineInfo( char const* _file, std::size_t _line ) noexcept
+        : file( _file ), line( _line ) {}
 
         SourceLineInfo( SourceLineInfo const& other )        = default;
         SourceLineInfo( SourceLineInfo && )                  = default;
@@ -61,7 +62,7 @@ namespace Catch {
     std::ostream& operator << ( std::ostream& os, SourceLineInfo const& info );
 
     // This is just here to avoid compiler warnings with macro constants and boolean literals
-    bool isTrue( bool value );
+    inline bool isTrue( bool value ) { return value; }
     bool alwaysTrue();
     bool alwaysFalse();
 
@@ -82,4 +83,3 @@ namespace Catch {
     ::Catch::SourceLineInfo( __FILE__, static_cast<std::size_t>( __LINE__ ) )
 
 #endif // TWOBLUECUBES_CATCH_COMMON_H_INCLUDED
-
diff --git a/include/internal/catch_result_type.cpp b/include/internal/catch_result_type.cpp
index 6e048865..0f62f1b8 100644
--- a/include/internal/catch_result_type.cpp
+++ b/include/internal/catch_result_type.cpp
@@ -22,7 +22,6 @@ namespace Catch {
     }
 
     bool shouldContinueOnFailure( int flags )    { return ( flags & ResultDisposition::ContinueOnFailure ) != 0; }
-    bool isFalseTest( int flags )                { return ( flags & ResultDisposition::FalseTest ) != 0; }
     bool shouldSuppressFailure( int flags )      { return ( flags & ResultDisposition::SuppressFail ) != 0; }
 
 } // end namespace Catch
diff --git a/include/internal/catch_result_type.h b/include/internal/catch_result_type.h
index 6934fc11..000b4f3d 100644
--- a/include/internal/catch_result_type.h
+++ b/include/internal/catch_result_type.h
@@ -47,7 +47,7 @@ namespace Catch {
     ResultDisposition::Flags operator | ( ResultDisposition::Flags lhs, ResultDisposition::Flags rhs );
 
     bool shouldContinueOnFailure( int flags );
-    bool isFalseTest( int flags );
+    inline bool isFalseTest( int flags ) { return ( flags & ResultDisposition::FalseTest ) != 0; }
     bool shouldSuppressFailure( int flags );
 
 } // end namespace Catch