diff --git a/rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp b/rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
index 3764fafe6c..b97d0cdac7 100644
--- a/rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
+++ b/rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
@@ -43,7 +43,13 @@ void GLFragmentDecompilerThread::insertIntputs(std::stringstream & OS)
 	for (const ParamType& PT : m_parr.params[PF_PARAM_IN])
 	{
 		for (const ParamItem& PI : PT.items)
-			OS << "in " << PT.type << " " << PI.name << ";" << std::endl;
+		{
+			//Rename fogc to fog_c to differentiate the input register from the variable
+			if (PI.name == "fogc")
+				OS << "in vec4 fog_c;" << std::endl;
+			else
+				OS << "in " << PT.type << " " << PI.name << ";" << std::endl;
+		}
 	}
 }
 
@@ -116,22 +122,22 @@ namespace
 		switch (mode)
 		{
 		case rsx::fog_mode::linear:
-			OS << "	vec4 fogc = fog_param1 * fogc + (fog_param0 - 1.);\n";
+			OS << "	vec4 fogc = fog_param1 * fog_c + (fog_param0 - 1.);\n";
 			return;
 		case rsx::fog_mode::exponential:
-			OS << "	vec4 fogc = exp(11.084 * (fog_param1 * fogc + fog_param0 - 1.5));\n";
+			OS << "	vec4 fogc = exp(11.084 * (fog_param1 * fog_c + fog_param0 - 1.5));\n";
 			return;
 		case rsx::fog_mode::exponential2:
-			OS << "	vec4 fogc = exp(-pow(4.709 * (fog_param1 * fogc + fog_param0 - 1.5)), 2.);\n";
+			OS << "	vec4 fogc = exp(-pow(4.709 * (fog_param1 * fog_c + fog_param0 - 1.5)), 2.);\n";
 			return;
 		case rsx::fog_mode::linear_abs:
-			OS << "	vec4 fogc = fog_param1 * abs(fogc) + (fog_param0 - 1.);\n";
+			OS << "	vec4 fogc = fog_param1 * abs(fog_c) + (fog_param0 - 1.);\n";
 			return;
 		case rsx::fog_mode::exponential_abs:
-			OS << "	vec4 fogc = exp(11.084 * (fog_param1 * abs(fogc) + fog_param0 - 1.5));\n";
+			OS << "	vec4 fogc = exp(11.084 * (fog_param1 * abs(fog_c) + fog_param0 - 1.5));\n";
 			return;
 		case rsx::fog_mode::exponential2_abs:
-			OS << "	vec4 fogc = exp(-pow(4.709 * (fog_param1 * abs(fogc) + fog_param0 - 1.5)), 2.);\n";
+			OS << "	vec4 fogc = exp(-pow(4.709 * (fog_param1 * abs(fog_c) + fog_param0 - 1.5)), 2.);\n";
 			return;
 		}
 	}
diff --git a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
index d36fa5db58..698aba27f1 100644
--- a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
+++ b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
@@ -92,7 +92,7 @@ static const reg_info reg_table[] =
 	{ "spec_color", true, "dst_reg2", "", false },
 	{ "front_diff_color", true, "dst_reg3", "", false },
 	{ "front_spec_color", true, "dst_reg4", "", false },
-	{ "fogc", true, "dst_reg5", ".x", true },
+	{ "fog_c", true, "dst_reg5", ".xxxx", true },
 	{ "gl_ClipDistance[0]", false, "dst_reg5", ".y", false },
 	{ "gl_ClipDistance[1]", false, "dst_reg5", ".z", false },
 	{ "gl_ClipDistance[2]", false, "dst_reg5", ".w", false },
@@ -118,10 +118,7 @@ void GLVertexDecompilerThread::insertOutputs(std::stringstream & OS, const std::
 	{
 		if (m_parr.HasParam(PF_PARAM_NONE, "vec4", i.src_reg) && i.need_declare)
 		{
-			if (i.name == "fogc")
-				OS << "out float " << i.name << ";" << std::endl;
-			else
-				OS << "out vec4 " << i.name << ";" << std::endl;
+			OS << "out vec4 " << i.name << ";" << std::endl;
 		}
 	}
 }