diff --git a/armnn-fix-armv7.patch b/armnn-fix-armv7.patch
new file mode 100644
index 0000000..3a33d9d
--- /dev/null
+++ b/armnn-fix-armv7.patch
@@ -0,0 +1,18 @@
+--- armnn-24.08/include/armnn/Numpy.hpp.orig	2024-09-06 11:05:16.800066800 +0200
++++ armnn-24.08/include/armnn/Numpy.hpp	2024-09-06 11:05:58.717592900 +0200
+@@ -157,7 +157,7 @@ namespace armnnNumpy
+     inline void CreateHeader(std::ifstream& ifStream, HeaderInfo& headerInfo, Header& header)
+     {
+         char stringBuffer[headerInfo.m_HeaderLen];
+-        ifStream.read(stringBuffer, headerInfo.m_HeaderLen);
++        ifStream.read(stringBuffer, static_cast<std::streamsize>(headerInfo.m_HeaderLen));
+ 
+         header.m_HeaderString = std::string(stringBuffer, headerInfo.m_HeaderLen);
+         // Remove new line character at the end of the string
+@@ -403,4 +403,4 @@ namespace armnnNumpy
+     }
+ }
+ 
+-#endif // NUMPY_HPP
+\ No newline at end of file
++#endif // NUMPY_HPP
diff --git a/armnn.changes b/armnn.changes
index 78fd0c6..f781228 100644
--- a/armnn.changes
+++ b/armnn.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Sep  6 13:29:47 UTC 2024 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Add patch to fix build on armv7:
+  * armnn-fix-armv7.patch
+
 -------------------------------------------------------------------
 Tue Sep  3 09:59:35 UTC 2024 - Guillaume GARDET <guillaume.gardet@opensuse.org>
 
diff --git a/armnn.spec b/armnn.spec
index 79f7d48..d1ec4e6 100644
--- a/armnn.spec
+++ b/armnn.spec
@@ -79,6 +79,8 @@ Group:          Development/Libraries/Other
 URL:            https://developer.arm.com/products/processors/machine-learning/arm-nn
 Source0:        https://github.com/ARM-software/armnn/archive/v%{version}.tar.gz#/armnn-%{version}.tar.gz
 Source1:        armnn-rpmlintrc
+# PATCH-FIX-UPSTREAM - https://github.com/ARM-software/armnn/issues/786
+Patch1:         armnn-fix-armv7.patch
 # PATCHES to add downstream ArmnnExamples binary - https://layers.openembedded.org/layerindex/recipe/87610/
 Patch200:       0003-add-more-test-command-line-arguments.patch
 Patch201:       0005-add-armnn-mobilenet-test-example.patch
@@ -372,6 +374,7 @@ This package contains the libarmnnOnnxParser library from armnn.
 
 %prep
 %setup -q -n armnn-%{version}
+%patch -P 1 -p1
 %if %{with armnn_extra_tests}
 %patch -P 200 -p1
 %patch -P 201 -p1