diff --git a/src/core/gpu/cl/kernels/ClMulKernel.cpp b/src/core/gpu/cl/kernels/ClMulKernel.cpp
index 837324e..b8081bb 100644
--- a/src/core/gpu/cl/kernels/ClMulKernel.cpp
+++ b/src/core/gpu/cl/kernels/ClMulKernel.cpp
@@ -53,12 +53,12 @@
     ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(src1,
                                                          1,
                                                          DataType::U8, DataType::QASYMM8, DataType::QASYMM8_SIGNED,
-                                                         DataType::S16, DataType::QSYMM16, DataType::F16,
+                                                         DataType::S16, DataType::QSYMM16, DataType::F16, DataType::S32,
                                                          DataType::F32);
     ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(src2,
                                                          1,
                                                          DataType::U8, DataType::QASYMM8, DataType::QASYMM8_SIGNED,
-                                                         DataType::S16, DataType::QSYMM16, DataType::F16,
+                                                         DataType::S16, DataType::QSYMM16, DataType::F16, DataType::S32,
                                                          DataType::F32);
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(scale < 0, "Scale cannot be negative.");
     ARM_COMPUTE_RETURN_ERROR_ON(act_info.enabled() && !is_data_type_float(dst->data_type()));
@@ -83,8 +83,8 @@
                                         "Dst can only be QASYMM8_SIGNED if both src are QASYMM8_SIGNED");
         ARM_COMPUTE_RETURN_ERROR_ON_MSG(dst->data_type() == DataType::QSYMM16 && (src1->data_type() != DataType::QSYMM16 || src2->data_type() != DataType::QSYMM16),
                                         "Dst can only be QSYMM16 if both src are QSYMM16");
-        ARM_COMPUTE_RETURN_ERROR_ON_MSG(dst->data_type() == DataType::S32 && (src1->data_type() != DataType::QSYMM16 || src2->data_type() != DataType::QSYMM16),
-                                        "Dst can only be S32 if both src are QSYMM16");
+        ARM_COMPUTE_RETURN_ERROR_ON_MSG((src1->data_type() == DataType::S32 || src2->data_type() == DataType::S32) && (dst->data_type() != DataType::S32),
+                                        "Dst must be S32 if source tensors are S32");
         ARM_COMPUTE_RETURN_ERROR_ON_MSG(detail::have_different_dimensions(out_shape, dst->tensor_shape(), 0), "Wrong shape for dst");
     }
 
@@ -127,7 +127,12 @@
     }
     else
     {
-        if(src1->element_size() == 2 || src2->element_size() == 2)
+        if(src1->element_size() == 4 || src2->element_size() == 4)
+        {   
+            // use 64 bit accumulator for 32-bit input
+            acc_type = "long";
+        }
+        else if(src1->element_size() == 2 || src2->element_size() == 2)
         {
             // Use 32-bit accumulator for 16-bit input
             acc_type = "int";
diff --git a/src/core/gpu/cl/kernels/ClMulKernel.h b/src/core/gpu/cl/kernels/ClMulKernel.h
index e2e54a8..44162f3 100644
--- a/src/core/gpu/cl/kernels/ClMulKernel.h
+++ b/src/core/gpu/cl/kernels/ClMulKernel.h
@@ -50,6 +50,7 @@
      *   - (U8,S16)                        -> S16
      *   - (S16,U8)                        -> S16
      *   - (S16,S16)                       -> S16
+     *   - (S32,S32)                       -> S32
      *   - (F16,F16)                       -> F16
      *   - (F32,F32)                       -> F32
      *   - (QASYMM8,QASYMM8)               -> QASYMM8
@@ -58,9 +59,9 @@
      *   - (QSYMM16,QSYMM16)               -> S32
      *
      * @param[in]  compile_context The compile context to be used.
-     * @param[in]  src1            An src tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32.
-     * @param[in]  src2            An src tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32.
-     * @param[out] dst             The dst tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32.
+     * @param[in]  src1            An src tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32/S32
+     * @param[in]  src2            An src tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32/S32
+     * @param[out] dst             The dst tensor info. Data types supported: U8/QASYMM8/QASYMM8_SIGNED/S16/QSYMM16/F16/F32/S32
      * @param[in]  scale           Scale to apply after multiplication.
      *                             Scale must be positive and its value must be either 1/255 or 1/2^n where n is between 0 and 15.
      * @param[in]  overflow_policy Overflow policy. Supported overflow policies: Wrap, Saturate