diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e3426f1a42c..17ca76c1d993 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -331,11 +331,6 @@ ELSEIF ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
        OR (APPLE AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.1"))
     SET(USE_CXX_11 TRUE)
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-error=c++11-narrowing")
-    #deprecated-register breaks Travis builds
-    IF ((NOT APPLE AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "3.3")
-         OR (APPLE AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.0"))
-      SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-register")
-    ENDIF()
   ENDIF()
 ELSE()
   SET(USE_CXX_11 FALSE)
diff --git a/src/analysis/vector/mersenne-twister.cpp b/src/analysis/vector/mersenne-twister.cpp
index 296bc971d708..b86ac8b0306d 100644
--- a/src/analysis/vector/mersenne-twister.cpp
+++ b/src/analysis/vector/mersenne-twister.cpp
@@ -67,7 +67,7 @@ static inline void generate_numbers()
    */
 
   static const uint32_t MATRIX[2] = {0, 0x9908b0df};
-  register uint32_t y, i = 0;
+  uint32_t y, i = 0;
 
   // i = [0 ... 226]
   while ( i < ( DIFF - 1 ) )
@@ -145,7 +145,7 @@ extern "C" void seed( uint32_t value )
   MT[0] = value;
   index = 0;
 
-  for ( register unsigned i = 1; i < SIZE; ++i )
+  for ( unsigned i = 1; i < SIZE; ++i )
     MT[i] = 0x6c078965 * ( MT[i-1] ^ MT[i-1] >> 30 ) + i;
 }
 
@@ -154,7 +154,7 @@ extern "C" uint32_t rand_u32()
   if ( !index )
     generate_numbers();
 
-  register uint32_t y = MT[index];
+  uint32_t y = MT[index];
 
   // Tempering
   y ^= y >> 11;
diff --git a/src/core/pal/labelposition.cpp b/src/core/pal/labelposition.cpp
index 026cff75f893..4415a37f6ad1 100644
--- a/src/core/pal/labelposition.cpp
+++ b/src/core/pal/labelposition.cpp
@@ -65,7 +65,7 @@ namespace pal
     while ( this->alpha < 0 )
       this->alpha += 2 * M_PI;
 
-    register double beta = this->alpha + ( M_PI / 2 );
+    double beta = this->alpha + ( M_PI / 2 );
 
     double dx1, dx2, dy1, dy2;
 
diff --git a/src/core/pal/problem.cpp b/src/core/pal/problem.cpp
index f294bcdb4963..10ae82957b89 100644
--- a/src/core/pal/problem.cpp
+++ b/src/core/pal/problem.cpp
@@ -682,8 +682,8 @@ namespace pal
     int *sub;
 
     int id;
-    register int featS;
-    register int p;
+    int featS;
+    int p;
     int i;
 
     int n = 0;
@@ -1390,7 +1390,7 @@ namespace pal
     int subSize    = part->subSize;
     int *sub       = part->sub;
     int *sol       = part->sol;
-    register int subseed;
+    int subseed;
 
     double delta;
     double delta_min;
diff --git a/src/plugins/dxf2shp_converter/builder.cpp b/src/plugins/dxf2shp_converter/builder.cpp
index 6ba5c36d5cd5..af56db4e3ae1 100644
--- a/src/plugins/dxf2shp_converter/builder.cpp
+++ b/src/plugins/dxf2shp_converter/builder.cpp
@@ -329,8 +329,8 @@ void Builder::addArc( const DL_ArcData& data )
     return;
   }
 
-  register int i = 0;
-  register long shpIndex = 0;
+  int i = 0;
+  long shpIndex = 0;
 
   // Approximate the arc
 
@@ -411,7 +411,7 @@ void Builder::addCircle( const DL_CircleData& data )
   DL_PointData myPoint;
 
   // Approximate the circle with 360 line segments connecting points along that circle
-  register long shpIndex = 0;
+  long shpIndex = 0;
   for ( double i = 0.0; i <= 2*M_PI; i += M_PI / 180.0, shpIndex++ )
   {
     myPoint.x = data.radius * cos( i ) + data.cx + currentBlockX;